HiBy R6pro II

General Information


HiBy R6pro II--the next-gen midrange player from HiBy in 2023. Sporting an all-new exterior design, it is also the first DAP in its class to run the flagship AK4101+Dual AK4499EX DAC set, and the first DAP to use all 8 output rails from two AK4499EX in single-ended output mode.

R6proII specs.png

Latest reviews


100+ Head-Fier
Pros: Cool design
Flagship level configuration
Class A amplification
Fast operation
Android 12
Systemwide parametric EQ
Very neutral and natural sound
Cons: Battery life
Low power output
Side buttons are hard to feel and press with the leather case on
Lack of volume wheel
R6 Pro II is, as the name implies, the second iteration of the improved Pro version of the R6 line of Digital Audio Players from Hiby. Although I have known and followed Hiby as a company, R6 Pro II is the first of their products I have actually used. Retailing at 749 USD, this DAP has some impressive specs to boast about.



I bought R6 Pro II with my own money from a friend pre-used so, of course I didn’t pay the full price if that matters. I have been using the device for some time as my personal unit, therefore review includes my own long term user experience as well. As I always say, everyone is biased one way or another so take everything you read with a grain of salt. Also I will try to be more concise and to the point in my reviews from now on without worrying about the word count etc. If you have any questions, please ask me in the comments and I will try to answer them to the best of my abilities.

About Hiby​

Hiby was founded in 2011 according to their website and has even more experience in the audio field apparently. They are mostly known for their Digital Audio Players but they also make DAC/Amps and earphones. However, what makes Hiby different from other manufacturers is their expertise in software. Their UIs, apps and connection protocol Hiby Link are used by even other brands.


Packaging of R6 Pro II​

R6 Pro II comes with a rather modest packaging, still it doesn’t feel like missing anything. A leather protective case, spare screen and back glass protectors, a rather thick USB-C to USB-C cable and a USB-C to USB-A adapter is included in the package. Leather case feels sturdy and premium enough and has a great design feature that stretches and closes when the DAP is slid inside. After the loose DX300 case I used for a long time, it is a very welcome change.


Hardware of R6 Pro II​

R6 Pro II is a hefty device. In fact it’s heftier than I first thought it would be, definitely more in line with +1k devices. It has a unique asymmetrical wavy design but not as esoteric as Astell&Kern devices. R6 Pro II comes in two colors: Purple and black. Purple comes with a purple case and black comes with a gray case. Honestly I would have liked to have the purple one instead.

Inside, the device used Asai Kasei’s latest DAC chip AK4499EX in dual formation along with their AK4191EQ delta-sigma modulator. Companies like to promote this modulator as another DAC chip but it really isn’t and if I’m not mistaken this modulator was embedded to older chips but in the latest AK4499EX they separated it from the DAC chip instead. Still these chips are flagships of the company and having them in a DAP that’s sold for 749 USD is quite a feat.


R6 Pro II runs Qualcomm’s Snapdragon 665 processor. While it’s not a flagship or the latest processor on the market, due to batch limitations, it was probably the best one they could offer. However I'm pretty sure it's the fastest processor that’s used in a DAP currently on the market. I had no problem with the operation of the device. It’s always smooth and responsive. Even one of my friends commented that it was faster than his phone.

Device has 4 GBs of RAM which is again enough for the intended use case and 64 GBs of internal storage. You can also add a micro SD card to increase the storage up to 2TBs for your music.

R6 Pro II has an independent amplification circuitry that can provide both class A amplification with dual OPA1652 op amps and class AB amplification. I will describe the differences later in its own section.

5.9” FHD+ screen with minimum bezel thickness gives R6 Pro II a sleek look but Hiby decided to feed all this hardware with 5000 mAh battery which yields suboptimal listening times.


Lastly R6 Pro II supports the usual wireless and wired connectivity options, namely WiFi, Bluetooth 5.0, USB and Coaxial through USB-C output. Analog outputs include 3.5 mm single ended and 4.4 mm balanced. Line outs and phone outs are separated. Device also supports DLNA, Airplay and their own Hiby Link protocols as well as Hiby Cast remote control. It can render X16 MQA too, if that’s important for you. I’m pretty sure there are others I forgot to mention.

So all of these yields to virtually no distortion and noise. Battery life isn’t the best, I got 5 hours and 45 minutes of playing time with streaming in class A mode, low gain and balanced output at volume 50/100 which is louder than my usual listening level, with minimum screen usage. Website says R6 Pro II plays for 5 hours in balanced class A mode so info is more than real. It’s mostly enough for me but competitors offer more so there is that. Class A mode works slightly warm which is expected.

Amplification section isn’t very powerful but should be enough for almost all IEMs and a lot of headphones out there. Max single ended power output is 125 mW and balanced power output is 383 mW.


Software and UI​

R6 Pro II uses an open Android 12.0 which means you can download any 3rd party apps you want and it should get app updates for quite a while. While Android 14 is out, 12.0 is the newest version among the current DAPs on the market if I’m not mistaken. Hiby Music comes pre-installed as the default music player and I didn’t need to use any other music app since I mostly stream my music.

UI is customized by Hiby for the intended use case. It is not too different from the usual Android experience but changing audio controls like adjusting gain and amplification type is especially very easy.


Hiby’s own MSEB (Mage Sound 8-ball Tuning) is an EQ based easy sound adjustment mechanism. If using EQ is intimidating for you, playing with MSEB can ease you into it. I think it’s a great feature. Here is the list that shows how each choice affects the sound:

1 -- Overall Temperature is a tilt of the whole line towards treble (cool) or bass (warm)
2 -- Bass extension 70Hz and below
3 -- Bass texture 100Hz (medium)
4 -- Note thickness 200Hz (wide)
5 -- Vocals 650Hz (very wide)
6 -- Female overtones 3kHz (tight)
7 -- Sibilance LF 5.8kHz (medium)
8 -- Sibilance HF 9.2kHz (medium)
9 -- Impulse response 7.5kHz (very wide)
10 - Air 10kHz sloped all the way to 20kHz

Other than that Hiby added Systemwide Parametric EQ to P6 Pro II along with some of their other DAPs with the latest updates. Actually groundwork was always there, MSEB used it after all, but they decided to give the freedom of choice to us. It has 9 bands and all the filters, not just peak filters. I tried different use cases and it worked with 3rd party apps and also digital out through USB. Looks like Hiby wants me to sell my RME Adi-2 DAC FS.

Sound of Hiby R6 Pro II​

I don’t like describing the sound of the source gears with frequency response terms but I don’t really know a better way either. In the case of the R6 Pro II, in one word, it sounds focused. First thing I noticed when I started listening to it was how focused it was, especially the midrange. No region in frequency response was emphasized but if I were to name one highlighted area, it was the midrange.

The Midrange of the R6 Pro II is clean, crisp and sharp. Bass is neutral, just how I like it. I know we mostly judge the quality of a source gear by how it handles the bass and believe me it handles it well, especially in the class A mode but doesn’t particularly emphasize or highlight it. Treble is devoid of any digital glare or sharpness. So while I wouldn’t call R6 Pro II a warm source, if neutral normally has this kind of quirks for you, I guess you can call R6 Pro II a little warm.


R6 Pro II is very resolving, more resolving than its peers. Its staging capabilities are also above average and the focus I kept rambling about makes imaging and layering especially sharp and precise. Timbre is very natural too. As usual comparisons should shed more light to what I mean.

Class A vs. Class AB​

  • Biggest difference is in the bass notes. Class A is more incisive in its attack. It also sounds bolder and more confident, AB, compared to that is softer.
  • Class A has sharper and more focused imaging and separation. It makes Class A resolve the nuances easier too. Class A also might be slightly more spacious but it’s hard to tell.

Although Class A is definitely the way to go for me, depending on the situation you can choose to use Class AB too, to make the battery last longer or to have a more relaxing listening session.


R6 Pro II vs. Fiio M11 Plus LTD​

When I had the M11 Plus I briefly compared the two and sold the M11 Plus in the end. My findings were as follows.

  • Bass was more emphasized on Fiio with more heft and body to it.
  • Timbre was the most apparent difference between the two, R6 Pro II being more natural, especially the midrange on the R6 Pro II sounds better with more focus.
  • Imaging was sharper on R6 Pro II and staging was more enveloping.
  • Other than sound differences, R6 Pro II uses a newer processor, OS and DAC chip. With the latest update R6 Pro II got systemwide Parametric EQ too.

Desktop Rig (Monolith Liquid Platinum DAC and Amp Section of Yulong Da-art Aurora)​

  • Desktop Rig has more handling power on tap and bass is even more authoritative.
  • Desktop Rig also has better staging.
  • R6 Pro II is smoother and more controlled in the treble.
  • Desktop Rig is more resolving and has better layering and separation capabilities.

All in all my desktop rig is more lively but R6 Pro II smooth and controlled.



Hiby R6 Pro II was a device I have been very interested in since it was announced. I “degraded” from DX300 and never looked back. I also had FiiO M11 Plus LTD for a short while but didn’t feel any inclination to keep it. That’s how much I like my R6 Pro II. I knew what I was getting into. Yes power output is lower than other DAPs in its price range but I mostly use IEMs outside so it wasn’t a problem. Also I can only listen to music for a couple of hours at the office so battery life didn’t bother me too much either. Sound quality, the parts that have been used, futureproof OS and Parametric EQ already make this device a value proposition that’s too hard to pass.
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Headphoneus Supremus
Mid-fi King?
Pros: Excellent sound quality
Unique and impressive design
Slick UX
Cons: Size
Battery life
I had the chance to tour the Hiby R6 Pro II thanks to @Damz87. It’s the first time I’ve toured something that I had considered buying, so I was very keen to try this.

Design and Aesthetics

I really like the design of the R6P2, the textured matte back is a big improvement on glass-backed DAPs. It's unique and stands out. It feels really nice in the hand and more solid, less fragile. I think I would use this without a case if I owned one. It does have some sharpish corners, but that’s a pretty minor issue.


The R6P2 runs the SD 865 chip with Android 12. I recently owned the FiiO M11 plus ESS that ran Android 10 on the 860 chip. The R6P2 is not really noticeably faster than that DAP for common functions. I never pushed them with mutli-tasking etc. Android 12 may give you more longevity. But apart from that, I don’t think that’s a reason to prefer the R6P2.

When Hiby first released the R6iii with Android 12, it was a bit buggy. But those bugs seem to be resolved now.

It offers the usual Hiby features, including the system-wide MSEB EQ. I quite like that myself, once you get the hang of it, it’s useful for making small tweaks. If you’re into full band EQ, you can run apps like Wavelet and PowerAmp on it.

I didn’t really have a chance to push the battery life on it. But I was surprised by how well it lasted given the specs. If you’re only listening for an hour or two here and there, you’d only need to charge every 4-5 days. Obviously if you’re a heavy user the battery life may be an issue.

Sound Quality

I’m going to do this in comparison-mode. I currently own the Mojo 2 and Hiby R5G2. I recently owned the Hiby R6iii and FiiO M11 plus ESS. Out of those, the Mojo for me is the clear winner in technical performance. The R6P2 is good, but the Mojo gives better resolution, better staging, better micro detail and a more refined/natural overall tonality.

That said, the R6P2 is not too far behind and would an excellent alternative to the Mojo if you are using it while on the move and prefer a single box solution (unless you spring for the Chord Poly with the Mojo).

In terms of tonality, compared to the Mojo 2, the R6P2 is cooler, less organic, more leading-edge sharpness, less upper bass and midrange warmth. If you like that type of presentation you may prefer the R6P2. But I prefer the Mojo’s tonality.

I also own a Hiby R5G2 that I used to use as transport before I got the Poly. The R6P2 is significantly better the R5G2 in every way, as it should be. I previously owned the R6iii, from memory I’m pretty confident it would be an upgrade on that. Similar tonality but more resolving.

The M11 plus ESS I think would be closer comparison, but I no longer have it to direct compare. The R6P2 is new with a better SoC chip but worse battery life. If I was buying new, I would go for the R6P2, the design is nicer, newer tech and battery life is not an issue for the way I would use it.


The Hiby R6 Pro ii is an excellent DAP. It brings a great combination of unique design, slick UX and superb sound quality for the price. I think it probably reigns atop the pile of mid level DAPs at present.

Should you buy it? If sound quality is your primary concern and you don't need a pocket-friendly one-box player, I'd still go for the Mojo 2 (and the Poly if budget allows). As a Mojo2/Poly user, I was very interested whether the R6P2 would tempt me to simplify back down to a DAP. It didn't. It is slightly nicer UX then the Mojo/Poly, but not enough to justify the drop is sound quality for me. YMMV.

If you do want to be able to pocket it though and have large pockets, then the only concern would be battery life. But as long as you're only listening for an hour or two each day or are okay charging every couple of days, the battery life is fine IMO.


100+ Head-Fier
Form > Function?
Pros: Hugely dynamic
Sleek design
Excellent software with DSP capabilities
Cons: Middling battery life
Heavily reliant on buttons that don’t feel that great
Poor raw power output



Thank you to @Damz87, @Joe Bloggs and Hiby for arranging the Australian tour of the Hiby R6 Pro 2. Big thank you especially to Joe for providing his personal unit on tour.

The digital audio player (DAP) is something of an anomaly among people who do not care much for audio fidelity. Often, they gawk at my oddly shaped brick and query, “what is that?”. To which I must go into an explanation that it is essentially an iPod, and so beings the game of 21 questions as to why I bother when I have a phone and Airpods at my disposal. This is not a new experience to me but at the same time, even audiophiles with a wealth of equipment also find themselves querying, “why a DAP?”.

Today’s review concerns the Hiby R6 Pro II (R6P2) a DAP that is priced to be mid-fi but promises a wealth of features and sound quality that would have you believe that it is a summit-fi DAP. And instead of just talking about the R6P2 I would like to talk about the concept of DAPs as a whole.

The Factual Stuff​

The R6P2 is an Android 12 powered DAP featuring a Snapdragon 665 SoC and more importantly, a AK4191EQ + dual AK4499EX DAC. Finished in aluminium anodised in either purple or black, the R6P2 takes a more design-forward approach to aesthetics, with curves and a machined pattern in the rear. On the underside of the unit is a wealth of ports including a 3.5mm LO and PO as well as a 4.4mm LO and PO.

The R6P2 features a large 5.9” IPS screen with a higher than HD resolution of 1080 x 2160.

Within the R6P2 is 4GB of RAM and 64GB of internal storage. Either side of the R6P2 feature a rocker button and an additional button offset.

The amplification stage of the R6P2 is drive by 2 OPA1652s and 8 NXP bipolar transistors leading to 125mW output through the unbalanced 3.5mm and 383 mW output through the balanced 4.4mm with either Class A or Class AB output.

The R6P2 has a 5000 mAh battery and Hiby report play time of 8 hours at the longest through 3.5mm, Class AB and 5 hours at the shortest through 4.4mm, Class A.

The Opinion Stuff​

But why male models?​

Perhaps delving into why the R6P2 is or isn’t a good DAP, perhaps it is more pertinent to explain why bother with DAPs in the first place. I personally enjoy DAPs as my audio source as I am often listening on the go and whilst the smartphone + dongle combination is something that would likely be able to match a DAP, the DAP remains hugely convenient to me. By having a separate device purely dedicated to music listening, I am able to save my phone’s battery life, remove distractions from my music listening and be able to use various SD cards at my ease. I find that when I plug my IEMs into my DAP I am removing the chance of being distracted by apps (despite DAPs being able to have these apps), emails or calls coming through that can definitely wait.


If you’re reading a DAP review, I would venture to believe that you are a believer of source impact on sound quality. If you are not, I would skip this section completely and move to the “Quality of Life & Value” section as you would believe that it is sheer baloney.


The most prominent aspect of the R6P2 seems to be a healthy amount of boost in the low end. The sub-bass of IEMs when paired with the R6P2 appears to be presented with added presence and extension in the low end providing a deep rumble with certain tracks. This is not an overbloated sub-bass boost, it remains subtle, nuanced and controlled with the bass notes. To this effect, mid-bass seems to have little to no movement, I would not term the R6P2 as a warm source as more neutral IEMs remain so and warm IEMs do not descend into the overly dark territory.

The bass extension seems to be the most prominent aspect of the R6P2 as there is a seemingly deeper reach into the low end creating a very pleasing sense of physicality with IEMs that had none previously.


The midrange of the R6P2 remains distinctly neutral to my ears with no real emphasis on any particular aspect of the midrange. There is not sudden injection of warmth nor is there a dramatic emphasis on sibilant upper midrange notes with more neutral IEMs. There is a certain sense of spaciousness and airiness with vocals on the whole that provides you with a distinct sense of naturalness to the timbre. I would definitely not call the R6P2 as thin nor ‘digital’ in nature as instrumentalization and vocals remain very good in their tonality, but there isn’t much in the way of tonal colouring going on with the R6P2.

Note weight isn’t heavy nor thin in any regard owing to the retention of mid-bass and so I believe that the R6P2 is a good choice for maintaining a neutral mid-range performance unlike some sources which seek to colour this region considerably.


Treble performance on the R6P2 is similarly a good story with a perceived slight boost in this region. This is not making a dead IEM suddenly sparkly nor is it going to make a sparkly IEM induce ear bleeding but rather there is an enhanced sense of layering and separation between regions and instruments.

Compared to the likes of cheaper dongles such as the DC04Pro wherein sibilance may be a side effect of drawing out additional top-end detail, the R6P2 remains fairly neutral.

Overall, there is not much to say for this region other than there is a slight emphasis on the upper regions of the frequency response that seeks to heighten the fun factor of the R6P2 by creating a edginess and crispiness to the notes in this region. When combined with the low-end performance, one could characterise the R6P2 as having a slightly v-shaped tonality.


The most prominent element about the R6P2 is the significant boost in dynamic performance of certain IEMs. The MEST MK2 is hardly a dynamic IEM remaining rather subdued with swings of volume in certain songs. The R6P2 amplifies such dynamic swings adding a sense of drama to your music. Soundtracks to films and video games have not sounded better on the MK2 until it was paired with the R6P2 with jarring crescendos being reproduced with gusto and jumps in volume giving me a great sense of scale and dynamic range.

Sound staging is rather good, presenting music in a spacious manner. The R6P2 doesn’t imbue a huge amount of staging width nor depth but rather seems to extend things slightly wider when listening closely. This is unlike certain sources such as the W4 or the RU7 which extended staging broadly to the point of potentially losing some engagement. The R6P2 remains present and thoroughly engaging throughout the entirety of the listening experience.

Detail retrieval and imaging is also similarly good for the price as I feel that microdetails and placement of certain instruments become more well defined when compared to the likes of competitors in the price range. The M6U (more on this below) feels less defined and sharp with its laissez-faire reproduction.


It is difficult to fault the R6P2 on the basis of sound. Very dynamic with a fun infused V-shaped tuning, the R6P2 provides the end user with a significant injection of excitement into any IEM that they listen to as well as the ability to tweak sound signatures with the wealth of DSP built into their software.

Overall, I would say that the R6P2 provides a very compelling package from a sound quality standpoint, especially when compared to its peers.


Shanling M6 Ultra (M6U)​

The M6U takes a different approach to sound quality when compared to R6P2. The M6U seemingly represents a phrase I have heard commonly in audio circles of “Shanling house sound”. With increased warmth, smoothness and note weight, the M6U colours tonality to a greater extent than the R6P2.

This shift in sound signature is likely a love-hate relationship whereas the R6P2 is seemingly able to appeal to a larger audience.
Technical performance on the R6P2 is better with a noticeable improvement in dynamics and a perceived extension in bass frequencies.

Outside of sound, the M6U takes a smaller footprint and features a volume wheel making adjusting volume a much more intuitive. The M6U runs an older version of Android and has fewer built-in DSP features.

Overall, the R6P2 is likely to appeal to more people whereas those who are looking for a more analogue and coloured tonality would likely love the M6U. I can see people owning both to achieve different sound signatures but if it were up to me to have only one DAP, I would go with the R6P2 for an all-rounder.

Luxury & Precision W4​

The W4 with fast filter, Tone set to 02 and all other DSP off creates a fairly dry and fast reproduction of music that seeks to heighten detail retrieval and clearly defines the edges of notes. The detriment of this tonality is a slight unnaturalness to certain instruments as well as vocal tonality. Comparatively speaking, the R6P2 maintains a natural presentation of music with greater dynamics and greater punchiness in the sub-bass region whereas mid-bass gets a little more love with the W4. Technicality wise, the W4 presents in a more wide and more flat staging compared to the R6P2 and as such I prefer the R6P2.

The W4 therefore is a more detail-orientated source with a great sense of speed and edginess to the music whereas the R6P2 seeks to be more engaging with its dramatic low-end and excellent dynamics.

The dongle is something of a love-hate source choice being extremely convenient but also somewhat annoying to carry around with your phone. The R6P2 suits my use case better in this scenario but the W4 is able to trade blows from a detail standpoint but ultimately, I feel that the R6P2 is far more engaging with its presentation.

Chord Mojo 2 + Poly​

The Mojo 2 presents a warmed up signature compared to the R6P2 with greater mid-bass imbuing a sense of low-end punch. Despite this warmth, upper mids remain fairly forward in the mix and the staging of the Mojo2 is wider than that of the R6P2. There is a greater sense of depth with the Mojo2 as well but there is a slightly more coloured tonality compared to the R6P2. Ultimately, where the R6P2 presents its greatest advantage is of course, the dynamics and microdetail retrieval.

The R6P2 also presents a greater emphasis on the upper mids and the treble regions of the frequency response curve creating a greater sense of crispness and tingle in the upper end that I thoroughly enjoy with certain IEMs.

The R6P2 and the Mojo2 present significant DSP capabilities but I, being the simpleton as I am, enjoy pushing buttons on the Mojo more than I do playing with convolution filters and incremental sliding scales on the MSEB.

Overall, the Mojo2 presents a more laid-back reproduction of music whereas the R6P2 seems to attack you more.

Quality of Life & Value​

The R6P2 eschews from DAP conventions to innovate some novel approaches to common complaints. The R6P2 utilises a rocker button and another offset button on either side of the DAP, leading to a total of 6 buttons on the DAP. These control volume, power and media controls and allow for the R6P2 to be rotated in a manner to reorientate the outputs. This is a tremendous design choice as it provides people with the option to utilise their DAP with their cables hanging from the top of the DAP or from the bottom.

The reality of this configuration however is that the buttons are fairly mushy to the touch and are not as intuitive to use as a encoder wheel which provide greater ease of adjustment. The button configuration is also quite odd on the left side of the R6P2 as the rocker is play/pause and skip defying conventional thinking.

The wealth of outputs on the R6P2 is a tremendous quality of life bonus for those who look to use their DAP in a more varied manner than a glorified MP3 player. Line outputs allow users to bypass the amplification stage of the R6P2 and connect to an external amp. This line out is also variable, allowing users to control volume on the line-out which is something that is a bit of a rarity on DAPs.

Android 13 on a DAP is a rarity unless you’re HIby. So often do many DAP manufacturers utilise obsolete versions of the Android operating system which is not an issue if you plan on using local files but poses a larger issue if you want to use apps which are constantly updating their requirements. For example, the Wavelet app only works on Android 10 and above.

Hiby is also known for their significant digital signal processing capabilities when compared to other DAP manufacturers. With their MSEB which seeks to simplify a 10 band EQ into more easily understood terms, various digital filters and add-ons such as a convolution filter and the DRX10K Dynamic plug-in. These elements provide the end-user with tremendous granularity in adjusting the sound signature of the R6P2 and is a definite bonus to those who are looking to tweak their sound signature. The dynamics plug-in creates a very unique shift in sound quality that is more easy to use than messing to use with a 10-band EQ and seems to achieve dramatic shifts in dynamic performance, which on the R6P2, is already stellar.

The variance of class A and class AB seem to be minute if anything with IEMs. Call it a trick of the mind but I noticed the most minor increase in bass quantity and sense of punch when in Class A versus Class AB. This was somewhat more pronounced on headphones with the HD6XX being more confined in staging but with a greater sense of presence and impact in its reproduction of music. Power output is a sore point on the R6P2 with the volume having to be pushed quite high even on high-gain on IEMs. No IEM had any issues on the R6P2 but I am willing to bet that the R6P2 is not ideal for certain headphones in the market. The HD6XX required 75 / 100 to be at the peak of my listening volume on the 3.5mm.

Battery life is also a poor element of the R6P2 with Class A and 4.4mm balanced output being only rated for 5 hours. Whilst you can bring this figure up with AB and 3.5mm it is still hardly a world beater in this regard. I did not do any specific testing but anecdotally, seeing percentages drop considerably with only a few hours of listening is a hugely disheartening factor of the R6P2 when compared to the likes of the Mojo + Poly combo and the M6U.

Overall, the QoL with the R6P2 leaves a lot to be desired. Hardware design, whilst wonderful to look at, leaves a lot to be desired when you’re actually interacting with the device. Software is great with the latest and greatest of Android combined with a suite of DSP, but the lack of a dedicated listening mode that you see with devices from Shanling (Prime Mode) and iBasso (Mango) is something that I miss somewhat. Battery life and power output are the weakest elements of the R6P2 as both are middling and somewhat annoying to deal with. I cannot recommend the R6P2 for people with power-hungry headphones nor can I recommend it for those looking for an all-day device, especially if you find yourself enamoured with the Class A mode.


The R6P2 brings a very even keeled approach to sound seeking to enhance more technical elements of whatever you’re listening to rather than the tonality. By increasing extension and improving dynamics there is a sense of “opening up” your IEM and improving the dynamic range of what you can hear.

The R6P2 has some creature comforts and excellent quality of life features that seek to improve your DAP experience but fundamental aspects such as power output and battery life suffer considerably.

I cannot fault the R6P2 on a sound quality perspective but on a liveability perspective, it leaves a lot to be desired.
And if you are willing to make sacrifices for sound quality to a certain budget, the R6P2 punches above its weight in this regard.




hi, no sound after connected to a6 pro, is there anything I needed to reset before it can function normally please?

Joe Bloggs

Sponsor: HiBy
Member of the Trade: EFO Technologies Co, YanYin Technology
His Porta Corda walked the Green Mile
hi, no sound after connected to a6 pro, is there anything I needed to reset before it can function normally please?
What is connected to the R6 pro II in this case? Via which port?