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1MORE Quad Driver In-Ear Headphones (Earphones/Earbuds) with Apple iOS and Android Compatible Microphone and Remote (Black)

  1. oHellJungo
    A Review for 1MORE Quad Driver
    Written by oHellJungo
    Published Feb 26, 2018
    Pros - Excellent imaging and separation with balanced-sound that gives every genre to shine and revealing a lot of hidden details. Good fitting too!
    Cons - Its average isolation and vocals can be a bit muddy in busy-sounding music.

    I bought this when my Sony XBA-N1AP had started to stop working and it totally goes beyond my dying pair for giving many little details which used to hide in my old earphones, yet they both share a very similar sound signature to each other. However, 1MORE Quad Driver steps to a slightly brighter path in terms of sound. Nonetheless, the Quad Driver still sounds great in dark-sounding music such as Doom Metal, Stoner Metal, Stoner Rock and so on.

    What surprised me the most is how it can separate each instrument so greatly. In busy-sounding music with a lot of layers like tracks in a self-titled album The Dark Element. For example, The Ghost and the Reaper. The earphones deliver dozens of layers from instruments and synthesis so clearly. You can hear almost everything, if not everything in the track.

    A majestic symphonic track like Edge of the Blade also shines in terms of fun-sounding and revealing hundreds of minor details such as a lingering flute from a back left side of the soundstage and a brass from the right side during some parts. Moreover, it can balance the heaviness from practical instruments, a synthesizer, and vocals greatly.

    The problem for me is how vocals stay slightly behind in those 2 tracks during choruses with a lot of raging instruments going on, but it's only a minor issue.

    How about its low, mid and high ranges?

    They all are fine while the mid-range is the greatest one by far. High-range is pleasant and will never ever hurt your ears. Additionally, it can reach the far side of this range while staying relaxingly. The low-range is surprisingly good. Surely, it's not bassy, yet it can bring enough bass to please you without ruining another range. It can be heavy when whatever that you're listening is trying to impress you with the bass aspect, not to mention that you can easily notice this range since your first listening if you choose a right song or a right listening matter for testing. The range also displays its power really well in Doom Metal, Stoner Metal, Stoner Rock etc. which I mentioned them in the first paragraph. In King Goat's Conduit album which is the Progressive Doom Metal record, the bass lies behind, yet easily noticeable. If you're looking for a bassy pair, this one is not for you.

    I have another extra thing besides music. A highway scene in Deadpool below is the sequence that reveals the true power of this pair fantastically. Its imaging and separation are so realistic. It's like I'm in the scene myself; it blew me away while I was watching this scene for the first time with Quad Driver. Whether you have the pair or not, you can try watching or listening to this video to test on how your earphones or headphones work in terms of cylindrical degrees, imaging, and separation work.

    In conclusion, 1MORE Quad Driver is the definitive and quality v-shaped earphones that can beat some, if not many higher prices pair. Like I said in the beginning, it totally and undoubtedly beats my old Sony XBA-N1AP.
      B9Scrambler likes this.
  2. alffla
    1More hits way above their price bracket again
    Written by alffla
    Published Apr 6, 2017
    Pros - Extremely smooth, balanced and natural sounding sound. Still great value. Comfortable. Sleek design. No sibilance at all.
    Cons - Not great for fans of more coloured sound e.g. strong bass/mids focus/brighter sound. No replaceable cable. A little bit heavy.

    1More just can’t stop shaking up the audiophile market – the 1More Triple Driver was a huge success and gave superb sound quality for its price, even beating out many more expensive earphones. Luckily for us consumers, they’ve gone and one-upped themselves with the Quad Driver.

    We would like to thank 1More for sending us this 1More Quad Driver Hybrid Earphone for review purposes. The Quad Driver currently goes for $199.99USD, click here to find out more about these excellent earphones!​

    With the tremendous success of the Triple Driver which was 1More’s original hybrid design (1 dynamic driver, 2 balanced armature), it seemed like it would be an extremely difficult task for them to repeat their achievement. The Triple Driver sells for only 100USD but hits way above its price bracket – a high quality yet price disruptive product in a market that seemed to have relentlessly increasing prices. When the Quad Driver was announced as another hybrid but with 1 more balanced armature added, I was cautiously optimistic towards it. On the one hand, I was extremely impressed with the Triple Driver and so had some confidence, but on the other, it seemed like 1More was just following the trend of adding more drivers.

    Well, I’m happy to report that the Quad Driver is not just an extra balanced armature. Despite the glowing reviews for the Triple Driver, it wasn’t a perfect product for the most discerning audiophile fans as many felt that its sound was just a little too scattered and soft at times, especially the bass response. With the Quad Driver, it is plain to see that 1More has taken all the previous comments and reviews to heart, and gone back to the drawing board to create a new product with the next level of sonic excellence.



    A short summary for people who don’t like reading – if you’re willing to spend a little more for quality audio at a still affordable price, look no further. 1More’s Quad Driver delivers a high resolution silky smooth sound with a fashionable and comfortable design. Bass is close to neutral but hits with enough punch and authority to keep up with heavier tracks, while mids and highs are amazingly clear and never sibilant – this is the Triple Driver taken to the next level. It’s hard to beat the Triple Driver for value, but the Quad Driver still hits way above its price bracket.

    -Amazing quality for price
    -Superbly well resolved sound
    -Neutral tuning that will work with all genres
    -Silky smooth highs that never offend the ears
    -Natural dynamic driver bass quality combined with seamless transition to balanced armature driver mids and highs
    -Comes with inline mic and volume controls that work with both iOS and Android!

    -If you are looking for a more coloured sound (e.g. heavy bass/brighter sound/mids only), these might not be for you
    -No replaceable cables if these beauties get damaged 
    -Metallic material makes it a little heavy

    1MoreQuadDriver_2.jpg   1MoreQuadDriver_3.jpg


    Weight: 18.5 g
    Cable Length: 1.25 m
    In-line Remote Control and Microphone
    Oxygen-Free Copper Wire
    Plug: 3.5 mm Gold Plated
    Frequency Range: 20-40,000 Hz
    Impedance: 32 Ω
    Sensitivity: 99 dB
    Rated Power: 5 mW

    1MoreQuadDriver_4.jpg   1MoreQuadDriver_5.jpg

    1MoreQuadDriver_7.jpg   1MoreQuadDriver_8.jpg

    The Quad Driver comes in the same box as the Triple Driver – a beautiful heavy weight cardboard box complete with metallic magnetic clasp that snaps shut satisfyingly. Unlike the Triple Driver, it has a sleeve that covers the whole box and the interior compartments for all the accessories has been redesigned to be more accessible with less hidden layers and boxes. Just like its predecessor, it comes with a nice faux-leather case with magnetic lid, a generous amount of eartips of different sizes and types, as well as adapters for airplane plugs and a cable clip all made with a nice brushed metal finish to match.


    The Quad Driver is a beautifully designed earphone, with sleek, modern curves and aggressive red accents in premium metal body. Some of the initial reveal vids have mentioned that it looks somewhat like a jet engine, and I would agree with that statement. The design is beautifully polished in all aspects – every component from the earphone all the way down to the colour of the visible wiring in the cable has been made to match the modern aesthetic.


    The metal parts, cool to the touch, exude a sense of quality and feel supremely premium. Overall, it is decently ergonomic as the housing is comfortably smooth and rounded out and fits most ear shapes easily with its cable down design. However, while it generally felt secure, I found that it felt slightly heavy due to the metal and amount of drivers inside, and perhaps would have benefited with a over-ear cable design to counteract the weight to feel safer.
    1MoreQuadDriver_15.jpg   1MoreQuadDriver_20.jpg
    The Quad Driver also features inline mic with 3 buttons for volume and playback control, also with the same gunmetal grey look. To my pleasant surprise, they have also listened to their reviews and users and changed the straight 3.5mm plug in the Triple Driver to an L-plug which makes for a better experience when using this (with the phone in your trousers). The “Kevlar-core” cable is sleeved with a slightly stiff plastic which helps with the tangling a little, and feels very durable, though the stiffness does tend to impart a very slight amount of microphonics when walking.

    The Sound

    The first word that came to my mind when I listened to the 1More Quad Drivers was balance. 


    It has become one of my favourite midrange price bracket earphones. It’s comfortable, affordable, and has fantastically natural and smooth sound with no evident peaks anywhere, nor any hint of sibilance in the highs.

    According to 1More, they have used a new “Diamond-like Carbon Driver” for the dynamic driver inside. While I wont be able to take the product apart to check, my experience with it is very positive. Hitting all the frequencies in the bass range, the Quad Driver’s dynamic driver produces an extremely natural and neutral sounding bass. It is strong enough that it will hit the spot for most listeners apart from very strong bass lovers, but not so strong that it is offensive to the more neutral oriented. It has a certain quality of “roundness” and realism in impact that I’ve always felt dynamic drivers had over balanced armatures. Subbass all the way to upper bass region is present, but has a quick decay that places the Quad Driver’s bass sound firmly in neutral territory, as it never goes out of its bounds to dominate over the mids and highs.

    In fact, the cohesion between dynamic and balanced armature driver in the Quad Driver is one of the best I have heard. Vocals sound just perfect with the support from the bass driver in lower notes that adds a touch of realism, and never do I feel that the dynamic driver is lagging behind the speed and clarity of the balanced armature drivers. Conversely, the frequencies covered by the balanced armatures here also don’t sound too mechanical and harsh as they often tend to, yet still showcase their advantages in reproduction of micro details. Separation of instruments is spot on, and soundstage just sounds just right  – it doesn’t sound too artificially widened, but it’s not too in your head either (for example, like the IM50). I don’t know what 1More is doing here and how they’re doing it, but this earphone is really superbly tuned.


    Personally for me though, the most pleasing frequency range in this is the bass-mid and midrange frequencies. I am not exaggerating – it is simply silky smooth and very realistic sounding. Perhaps that extra BA driver really is making that much of a difference as I can hear a gratifying sense of space and air around every instrument. Again, I have to reiterate that vocals and instruments in the midrange really sound magical, combined with just the right amount of highs to bring out the micro details of every word being sung and played.

    The Quad Driver also has no problems with the high frequencies, able to smoothly reproduce everything without a hint of sibilance. For me, the highs aren’t the star of the show here, but they are definitely not recessed, and the absence of any evident peaks makes for a very enjoyable listening experience combined with the gorgeous mids.

    Comparison to Triple Drivers

    I know everyone will be curious about this – how does the Quad Driver matchup to the highly acclaimed Triple Drivers? I would not say it is leaps and bounds above it, but the results are obvious for an experienced listener, and some of the design changes also just make for a better overall experience.


    Straight vs L shaped plug
    Basically same size and weight – still comfortable!
    Different colour – a more reserved grey instead of a more unique purple and rose gold.

    Bass is tighter in the Quad Driver. It is just that much better in every way that provides an overall better sense of cohesion with the mids and highs. Faster, more detailed, with a more controlled subbass that isn’t as loose and boomy (note that the Triple Driver’s bass isn’t very boomy to begin with), the Quad Driver’s dynamic driver retains all the flavour from the Triple Driver with a gentle smattering of refinement.

    The midrange is my favourite part about the Quad Driver. This frequency range has a much better sense of refinement to them especially in the lower-mid region transitioning from the dynamic driver upwards. While the Triple Driver seems a little rough around the edges in this area with a slight hollowed out sound, in comparison the Quad just gets out more luscious, rich mids. The Triples mids also sound a little distant in comparison to the quad driver, a little bit of mechanical grittiness to it , while the Quad’s mids are just silky smooth .

    While neither the Triple or Quad exhibit any sort of harshness, the Quad’s highs sound slightly more sophisticated and discerning and bring out a little more detail, sense of atmosphere, and air from the recordings. Is it a day and night difference? I wouldn’t say it is, but it will definitely be audible to an experience listener.

    Overall the sound signature is very much the same, but the Quad just edges out the Triple in every aspect. The timbre is more realistic in the Quad Driver, especially in bass-midrange and the cohesiveness is much better.

    quadtripcompare.jpg   quadtripcompare_1.jpg


    Took some quick measurements with the Vibro Veritas – it seems that the FR is unsurprisingly verysimilar to the Triple Driver’s, but a simple FR chart doesn’t show everything. Take what you will from this, I’m just a geek for this sort of thing. 


    Final thoughts

    I have been extremely pleased with this earphone and congratulate 1More with their excellent product. While the Quad Driver is a little less accessible coming at double the price of its predecessor, it is definitely a top pick in the budget – midrange price bracket, bringing a quality of sound that reaches much higher than its price may suggest.


    Originally written for AccessibleAudio, my personal collection of reviews! Thanks for reading.

      SnobbyNoob, Jim Bobber and Peddler like this.
    1. View previous replies...
    2. Jimster480
      Possibly this is from your source
      Jimster480, Apr 11, 2017
    3. harry501501
      Hi, thanks for a great review. I wasn't a huge fan of the Triple Drivers but I saw their appeal. Decent price for quad driver tho
      harry501501, Apr 17, 2017
    4. caballerolance
      U seem to know a lot. Which one has better sound quality, the 1more quad driver or the MSR7? For pop music, and for movies
      caballerolance, Aug 7, 2018
  3. ryanjsoo
    1More Quad Driver Review – Consumer Reference
    Written by ryanjsoo
    Published Apr 30, 2017
    Pros - Incredible separation and soundstage depth, linear midrange, clarity, build and design are truly exquisite, Fantastic universal remote
    Cons - Isolation, Size, Bass missing last bit of texture, Uneven highs, Huge nozzles limit tip rolling options
    Introduction –

    Once a subsidiary of Xiaomi, producer of the renowned Pistons earphone line, 1More has since branched off into its own, more premium audio brand. But as with many Asian manufacturers, 1More can get a little exuberant with their innovation, producing truly oddball products like their Capsule In-ear and even their very unorthodox E1008 earbud that I reviewed here. And while innovation is an imperative driving force in the industry, I would still argue that 1More’s strength lies within their more traditional products, their classic Piston derivatives, and their widely celebrated value champion, the Triple Driver Hybrid.

    But 1More’s experience with smartphone manufacturer Xiaomi has definitely influenced their development strategy; 1More have begun refining their current products rather than further branching out through the innovative and unorthodox, something that I would consider just as important. And leading charge is 1More’s very striking Quad Driver In-ear, an evolution of the triple driver that came before. With an asking price of $200 USD ($300 AUD), the Quad Driver once again represents terrific value on a per-driver basis. But as always, specs and real world performance often live in complete isolation. Let’s see how the 1More Quad Drivers hold to up some of the best hybrid driver earphones on the market and whether their sophisticated driver array is refined enough to outperform more traditional earphones such as the Meeaudio Pinnacle P1 and Hifiman RE-600.

    Disclaimer -

    I would like to thank Ari from 1More very much for his fantastic communication and for providing me with the Quad Driver for the purpose of review. There is no monetary incentive for a positive review and despite receiving the earphones free of cost, I will attempt to be as objective as possible in my evaluation.

    About Me – Some background, Gear of choice, Preferences and Biases

    I generally prefer a slight v-shape to my sound, but still closer to neutral. I like a lot of detail and clarity, but can appreciate a smooth, laid back sound such as that on the X10`s. I prefer a more neutral midrange within a relatively tight tolerance, but I`m probably more forgiving of brightness over darkness. I`m not particularly treble sensitive and can tolerate large amounts without fatigue, though too much ruins the enjoyment. If I use a different eartip/pad/cover during the review I will note that and describe the sound changes.

    Read More

    Accessories –


    As with the E1008, the Quad Driver is impeccably packaged with punchy renders and a magnetic latch embossed with a brushed metal 1More emblem.


    Within the box, 1More presents the buyer with a very systematic accessory layout that is both satisfying and comprehensive.


    Perhaps most immediately noticeable is the extensive array of included ear tips. Due to the exceptionally large bore size of the earphones themselves, buyers are mostly delegated to the included ear tips though luckily, 1More include 9 pairs, 6 silicone, and 3 foam. The silicone tips, in particular, are very finely sized and I had no issue finding a tip that fit me. The fine sizing also allows slight tailoring of fitment depth, notably impacting soundstage and bass performance. Should buyers still struggle to achieve a proper seal, the included memory foam tips are of pleasing quality, slightly improving isolation and providing a more individualized fitment.


    In addition, the Quad Driver is outfit with a nice magnetic pleather hard case, a ¼ inch adaptor and a nice brushed metal shirt clip and airplane adapter. So not only are accessories copious, each is also of excellent quality, contributing to the Quad Driver’s air of premium quality.

    Design –

    Like the HA-2 from Oppo, 1More’s ties with smartphone manufacturing giant Xiaomi can be appreciated through the Quad Driver’s impeccable build quality and absolutely eye-grabbing design. From the outset, the earphones are entirely metal though they rarely become cumbersome while feeling appropriately dense and premium. The tapered housings are visually reminiscent of streamlined jet engines while the red accented vents imbue interest without becoming gaudy or ostentatious. Although the earphones are comprised of multiple components, all mesh together with great accuracy, making every facet feel perfectly integrated and impressively rigid. The gunmetal colour scheme is more conventional though just as premium as the purple/rose gold scheme used before.


    As their name would suggest, the Quad Drivers house 4 drivers (3BA+1Dynamic) within each housing. But while other hybrid driver earphones utilize an over ear fit with a negative profile, notable examples including the Dunu DK-3001 and Oriveti New Primacy, the Quad Drivers assume a more traditional, consumer friendly cable-down fitment. As a result, the earphones are more convenient to wear/remove, but this design also makes them quite large, dwarfing the minute Hifiman RE-600.


    RE-600 - Quad Driver - XBA-40

    But through well-angled nozzles combined with the tapered housings, the Quad Drivers produce brilliant long term comfortable and a surprisingly stable fitment that reminds me of the JVC FX range of earphones. Of note, I did try wearing the earphones over-ear, the RE-600 for example, lends itself well to such a fit, though the Quad Driver’s long stems and shallow fitment didn’t produce reliable results; they are very much a cable-down earphone.


    Of course, the Quad Driver’s aren’t perfect and the nature of their fitment and large size do produce some notable shortcomings when compared to the very ergonomically sound New Primacy’s, RE-600’s and Pinnacle P1. For instance, by placing the 3 BA drivers within the nozzle, the Quad Drivers do have abnormally large nozzle diameter making tip-rolling extremely difficult. Those wide, short nozzles and large housings also produce a notably shallow fitment resulting in below average to average passive noise isolation. With the right tips (I had to go two sizes up from the default tips due to the shallow fit), the Quad Drivers attenuated just enough noise for public transport though they are definitely not suited for use in especially loud environments nor any form of activity.


    I would consider the cable to be an upgrade over the fabric sheathed unit installed on the Triple Driver and E1008. The Quad Driver's come with an OFC cable with Kevlar reinforcement, great for tensile strength but I have found these cables to be stiff and microphonic in the past. Luckily, the unit 1More have used on the Quad Drivers is sound with a smooth texture that easily routes through clothing and clear sheathing that reveals the 3 conducting paths snaking below, adding some visual intrigue. A well relieved right angle plug, metal terminations and a fantastic remote complete the package with the remote being particularly notable both in construction and function.


    For instance, all three buttons function both on Android and IOS, the integrated mic is of great quality and the aluminium buttons feel super clicky and responsive. In addition, the buttons are easily discerned with the volume buttons being slightly convex and the centre MFB having a concave surface.


    As far as the cable itself goes, being Kevlar reinforced, it is a bit stiff and springy but also incredibly tangle resistant, essentially untangling itself when removed from a pocket or case due to that springy nature and smooth texture. This does mean that the earphones are difficult to coil and store though the tangle resistance is outstanding. Being stiff, the cable also picks up a decent amount of microphonics but when compared to similar cable-down earphones, the Quad Driver is surprisingly quiet in that regard, perhaps due to the very laterally placed stems that place the cable away from the face, similar to the Klipsch X10. I would prefer more strain relief on the remote and earphones themselves though by the looks of the design there should be some internal relief. The cable is not removable like a lot of earphones around this price though the cable is of great quality and various features such as the right angle plug and tangle resistance will prolong the life of the earphones by reducing stresses on the cable and terminations.


    New Primacy - Quad Driver

    The Quad Drivers ultimately provide a great first impression on comfort, design, and durability. They are ergonomic with a solid cable-down fit and ample stability for basic commute. Of course, I would prefer a removable cable, but the included cable is more pragmatic in daily use than the rubbery unit on the New Primacy and the thin cables on the RE-600 and Sony XBA-40. The Pinnacle P1 is probably the Quad Driver’s closest competitor with the same asking price and metal construction though the finish on the Quad Drivers is considerably more refined, making the P1 feel almost unfinished by comparison. Still, all of the aforementioned earphones provide a deeper fit, are similarly comfortable and also isolate a lot more, making them more versatile for activity and travel. But if you prefer a shallower fitting earphone or perhaps simply a cable down fit (though the Pinnacle P1 can be worn both ways), the Quad Driver is quite outstanding.

    Sound –

    On the hardware side of things, the Quad Drivers utilize 3 balanced armature drivers in addition to a single carbon dynamic driver for a total of 4 drivers per ear. However, 1More have utilized a very unorthodox crossover method, dedicating the dynamic driver to both bass and midrange while delegating 2 armature drivers to high frequencies and the final armature driver to ultra-high frequencies. Through such a setup, the Quad Drivers achieve a more consistent sound from sources of varying output impedance and a slightly more coherent bass to midrange performance when compared to less integrated multi-driver earphones like the Sony XBA-40.


    Of note, I did find the Quad Drivers to be quite bassy on first listen though after 150 hrs of burn-in, I did find them to become a little more balanced throughout, not surprising since the majority of the sound is produced by the dynamic driver. In all fairness, I was listening to the very neutral Hifiman RE-600 before hearing the Quad Driver, but I would surmise that the sound differences are a combination of both physical burn-in and some psychological adjustment. After some more extended listening, I have found the Quad Driver to be just modestly v-shaped; they aren’t neutral or even balanced, but provide an engaging consumer reference sound.

    Drivability –

    The Quad Drivers have a relatively low impedance of 32ohms combined with an average sensitivity of 99dB. As such, they did require a few more volume notches than the New Primacy and RE-600, they were similarly difficult to drive as the Pinnacle P1. The Quad Drivers definitely benefit from a nice source, they struggled from my iPod Nano with a considerable loss of soundstage space, air and separation and plugging them into my HTC 10 or Oppo HA-2 immediately yielded superior results. That being said, I did notice a much larger difference switching from the Nano to my HTC than switching from my HTC to my HA-2, the Quad Drivers were definitely intended to be driven by smartphones, given the nature of the driver array, and most modern smartphones should have no issue driving these earphones. The earphones remained quite tonally consistent, they were vastly less affected by output impedance than the Sony XBA-40’s but unevenness in the high end was prevalent on high impedance sources. The Quad Driver’s aren’t overly susceptible to hiss but will pick up small amounts on particularly noisy sources, on my HA-2 and Hidizs AP60, hiss was just audible but easily overpowered when music was playing.

    Tonality –

    I’ll admit that I’m a sucker for v-shaped earphones and the 1More Quad Driver is a well-executed example indeed. They aren’t quite as balanced as the New Primacy and are considerably more v-shaped than the slightly mid-forward RE-600 though they are also more balanced overall than the Pinnacle P1 which I found to have quite an aggressive upper midrange/lower treble response and slightly scooped lower mids. In that regard, the Quad Driver retains plenty of balance to maintain genre versatility.

    Soundstage, Imaging and Separation –

    Being a vented, shallow fitting earphone, the Quad Drivers definitely hold an advantage over other sealed earphones in terms of soundstage performance offering an especially immersive performance. Booting up a live recording of Eric Clapton’s “Layla” and “Nobody Knows You When You’re Down and Out” and the most immediately noticeable aspect of the Quad Driver’s sound was their exemplary instrument separation. Great layering and delineation between instruments, vocals and audience produced a performance that handily bested the Pinnacle, RE-600 and even the more expensive New Primacy. In addition, impressive handling of complex passages flatter faster genres such as rock and electronic without sounding disjoint like the XBA-40. Soundstage space is also very impressive, especially depth which provides almost holographic projection of vocals and atmospheric effects. Of these earphones, the Pinnacle P1 had the most noticeably large soundstage, mainly in width, though the Quad Driver almost matches that out of the head width with far more depth, once again producing a more immersive sound. Imaging takes a bit of a hit due to the size and nature of the Quad Driver’s soundstage though centre image is quite strong and instrument placement is easily discerned; they just fail to match the incredibly sharp placement provided by the RE-600’s and New Primacy. Overall, if soundstage is a large priority, the Quad Driver is hard to beat within this price range, especially with regards to separation. Fans of classical, rock and electronic genres, in particular, will find much to love within the Quad Drivers tasteful v-shaped tuning and exceptional soundstage performance.

    Bass –

    Bass is boosted, but is well done in terms of tuning. The bass boost is mostly focussed within deep/lower-bass with surprisingly balanced mid-bass and upper-bass responses. Though the earphones still have a slight mid-bass boost, the earphones don’t sound particularly thick or warm and the low-end has both nice clarity and a notable lack of bloat. Due to the nature of this bass boost, the Quad Drivers can sound slightly muddy and even tubby at times, especially in stark contrast to very neutral earphones like the RE-600, though I would still consider them to be relatively balanced throughout their low-end in the grand scheme of things; the Pinnacle P1, for instance, is similarly tubby if not slightly more so. Bass also isn’t ever present nor does it ever drone as with more mid-bass boosted earphones, allowing for greater transparency on vocal tracks. The Pinnacle P1 is a similarly impressive performer in regards to bass with just slightly less emphasis overall. However, the Pinnacle places its emphasis more in the mid-bass, sounding punchier but less natural as a result. Bass also reaches considerably deeper on the Quad Driver than the P1, and those that thought the P1 was missing rumble or slam will find that physical bass response with the Quad Driver without bass ever becoming overwhelming or loose. The RE-600 and New Primacy provide tighter bass responses than both, excelling with greater PRAT whilst retaining a similar amount of extension, if slightly more in the New Primacy’s case. In terms of tuning, the New Primacy has more of a sub-bass emphasis while the RE-600 has similar tuning to the Quad Driver albeit with vastly less quantity; it’s really a matter of taste, but I would definitely lean towards the Quad Driver and New Primacy as their tuning generally comes with the least compromises.

    Otherwise, bass is articulate with really nice bass resolution and definition to each note, they actually sound quite similar to the Pinnacle in that regard, perhaps a factor of their exemplary soundstages. However, when listening to The Cranberries “Wanted”, each of those notes was missing some texture, especially evident in comparison to the outstanding Oriveti New Primacy and the leaner RE-600. That’s not to say that bass is slow or sloppy, the earphones had no issue keeping up with the fast basslines and rapidly transitioning tones of Michael Jackson and the Red Hot Chilli Peppers but that last bit of bass detail that I would expect at this price is missing. Still, the definition and clarity of bass notes are among the better earphones I have heard and when combined with the tasteful tuning, the Quad drivers rarely fail to impress; I think they’re a really well-performing earphone that provide no shortage of bass definition and slam without encroaching upon bass-head levels of quantity.

    Midrange –

    It may come as a surprise, but to my ear, the most impressive aspect of the Quad Driver’s audio performance is the midrange. It’s an evolution of the very balanced tone carried by 1More’s E1008, with greater clarity and resolution throughout. Breaking it down, the Quad Driver has quite a clear, balanced midrange that sits slightly behind the bass and treble but remains easily discernible and almost perfectly prominent. This is achieved via a moderate clarity boost and a slightly brighter tone. That being said, the midrange is very even, vocals are smooth if not quite as clean and sliky as the New Primacy, and this clear character remains consistent throughout the entire midrange. When compared to the RE-600, which I consider to be somewhat of a midrange benchmark, the Quad Driver had a similar emphasis on upper and lower midrange instruments though mids were considerably clearer and slightly fuller. Meanwhile, the New Primacy was even more full-bodied and slightly darker and the Pinnacle P1 was very aggressive though its upper midrange, sounding detailed and revealing but also a little unrefined and at times fatiguing. The Quad Driver sits in-between the New Primacy and RE-600 in terms of body, being slightly fuller than neutral but hardly thick or warm. Vocals are very clear with great layering and definition and clarity is fantastic without coming across as strident; the Quad Drivers have that smoother dynamic driver midrange tone, not unlike the Sennheiser ie800. This clarity does grant a slightly raspy tone to the midrange, especially with female vocals, though vocals never sound thing or overly artificial.

    The Quad Driver is quite aggressively detailed, not to the extent of the more forward Sony XBA-40 and Pinnacle P1, but more so than the New Primacy with the RE-600 being even more laid-back. Listening to R.E.M.’s “The Sidewinder Sleeps Tonight” and Indigo Girl’s “Sugar Tongue” and the Quad Driver impresses with great clarity and detail to acoustic guitar plucks and strums, revealing small intricacies that the more laid-back RE-600 tended to skip over while sounding more natural than the, even more, detail forward Pinnacle P1. The New Primacy did tend to resolve more detail though it is also a smoother earphone that places details more in the background with the Quad Driver sounding more engaging and excited. Similarly, listening to Modest House’s “Float On” and the Quad Drivers provided a reproduction with very nice midrange resolution and layering. Due to their v-shaped tuning, vocals were more recessed than the other earphones I’ve mentioned in this review though the Pinnacles were similarly recessed due to their thicker midrange and brighter tonal balance which pushes lower mids a little further behind in the mix. Still, all of these earphones provided pleasing intimacy to vocals though I did prefer the presentation of the RE-600’s and New Primacy’s which provided a little more balance to this slightly mid-recessed track and a little more raw detail and coherency. The Quad Driver ultimately produces a very clear, layered midrange with great resolution and very good detail retrieval that is edged out only by the most exemplary earphones around this price range such as the slightly more expensive New Primacy. Being v-shaped, vocals are slightly recessed, though the midrange is more even than most v-shaped earphones like the Pinnacles and their clear character means that midrange notes are never overshadowed.

    Treble –

    Despite having such a comprehensive treble driver array, I didn't find the Quad Driver to hold any significant advantage over the Pinnacle, New Primacy or even RE-600 in regards to high-frequency performance. They do depart from the New Primacy and RE-600 in terms of tuning, with more similarity to earphones such as the ie800 and Sony XBA-40. A middle treble boost around 8KHz imbues the sound with aggressive detailing and clarity but also slight irregularity to treble, resulting in a loss of detail and some coherency issues (tested from a low output impedance source). The RE-600 and New Primacy, though more laid-back do sound more coherent and linear in the highs which contribute to their fantastic detail retrieval though the Quad Driver does have slightly better top end extension and a lack of any high-end roll-off. Once again, I found the Quad Driver to be more linear than the Pinnacle though the P1 also produced considerably more treble sparkle and was slightly more detailed. Despite this, I still prefer the Quad Driver for long-term listening and their aggressive, slightly forward treble response combined with their expansive soundstage and stellar separation creates an intoxicating sound with great air and shimmer.

    But coming back to that uneven middle treble spike, I do feel that the Quad Drivers produce some harshness on treble-forward songs such as Radiohead’s “Creep”. That being said, treble does behave itself, for the most part, producing a well-detailed and textured sound that flatters cymbals, electric guitar, and atmospheric effects. When listening to Creep, the Quad Driver produced a nice rendition with cymbals sounding extended and well-bodied. On the contrary, the Pinnacle sounded slightly thin and splashy but also resolved slightly more detail in the upper registers while the more linear New Primacy and RE-600 both resolved more texture to each treble note along with a cleaner presentation than both the P1 and Quad Driver. Similar impressions carry over when listening to Queen’s “Killer Queen” where the Quad Driver was appropriately revealing and crisp with nice clarity to the finger snapping within the intro and high-hats throughout the chorus without sounding overly like wood sticks. The RE-600 immediately impressed with a very even treble response that provided more insight into those snaps though cymbals and high-hats were more rolled-off, losing out air and shimmer. The New Primacy was similarly revealing to the RE-600 while maintaining a natural tone and had no issue with extension apart from a slight roll-off at the very top. So I do think that Quad Driver is a nice sounding earphone though due to the nature of 1More’s treble boost, the can sound a little disjointed at times. More neutral earphones like the RE-600 do have noticeably more detail in the lower treble region along with more texture to high-notes. The 1More’s redeem themselves through greater extension, a lack of any roll-off and a slightly forward sense of detail and clarity that infuses the sound with excitement and energy without being quite as grating as either the Sony XBA-40 or Meeaudio Pinnacle P1.

    Verdict –

    I feel like the $200 price class is where earphones start getting really good with some truly outstanding offerings providing splendid price/performance ratios that make me question earphones within higher price ranges. I also like to take a look at the manufacturers marketing pitch for these earphones before getting down to my review. Though marketing will always be a sell, it does reveal glimpses of the designer’s intentions and goals and it’s interesting to see these actualised within the finished product. With the 1More, their marketing led me only to concern with 1More clearly selling towards a more consumer audience.


    But upon hearing their latest earphones, those concerns were immediately dispelled. The Quad Drivers provide a clear, engaging and mostly natural sound that comfortably matches the best in class through their notably strong soundstage and midrange performances; of course, they should, given their more open form factor. The earphones also aren’t too source picky so long as they have adequate power. So while the Quad Drivers may be sculpted, they are an exceedingly tasteful take on the popular V-shaped tuning that I know a lot of listeners enjoy. They actually remind me of the Bowers and Wilkins P7’s, not a balanced, neutral or even linear set of headphones, but one whose delicate sculpting produced a rewarding listen.

    Overall - 8.5/10, The Quad Drivers have a very tastefully tuned v-shaped signature that will likely come off as balanced to consumers and charmingly engaging to enthusiasts. While their shallow fitting form factor fails to match the practicality of the ergonomically exemplary New Primacy, RE-600 and Pinnacle P1, the Quad Drivers are more convenient to use with a more conventional fit and universal remote/mic. The Quad Driver is a gorgeous in-ear whose consumer exterior houses the internal workings of an audiophile masterpiece.

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    1. msvrthexkid
      So is it normal for it to sound muddy in the beginning!?
      msvrthexkid, Dec 27, 2019