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2018 Moondrop Crescent Brass Dynamic In Ear Earphone Best Bass HIFI Monitor Gold

Moondrop Crescent

  • Model Number: Moondrop Crescent

    Material: Brass

    Driver: dynamic

    Sensitivty: 98dB

    Impendence: 32ohm

    Frequency response: 16-30000Hz

    Cable Length: 1.2m

    Plug Type: Straight

    Color: Gold

    Package Contents: Eartips and Earphon

Recent Reviews

  1. yuriv
    Not really a review. I just have data to share.
    Written by yuriv
    Published Feb 26, 2019
    Pros - Sounds good out of the box, better than almost all stock IEMs at or near its price
    Solid build
    Not a prima donna; it sings just fine straight off a phone, laptop, or dongle.
    Cons - Can be uncomfortable (for me at least)
    Feels heavy in the ear
    Bass can’t be reduced easily with the usual reversible mods
    A headset version with mic and button isn’t available
    Only comes in gold
    Can take weeks to arrive unless you pay a lot of money for shipping
    Ok, it's sort of like a review. But not really. Technically it is?

    Moondrop Crescent FR.png
    Moondrop Crescent frequency response​

    I think it sounds good. I hear the canal resonance a little over 7 kHz, because I can’t insert it much deeper with the stock tips. I tried to match this with my measurement. The peak doesn’t sound as severe to me compared to what’s in the graph. You can determine where you’re hearing the resonance with a sine sweep. I created one that can be manually controlled: the link is in my sig. It also has a filter that can help determine the peak’s height in dB. Often, the center frequency isn’t exactly at the same spot for the left and right channels, and this can be heard as the sound moving from left to right (or the reverse) during the sweep.

    Moondrop Crescent, stock tips, deeper insertion.png
    Red: deeper insertion with stock tips. Right channel shown.​

    Tips and tricks
    The frequency response didn't change much with other silicone tips:

    Moondrop Crescent with Sony hybrid and Spinfit CP100 tips.png
    Red: Sony hybrid tip
    Green: Spinfit CP100​

    Moondrop Crescent with medium and small Sony MH755 tips.png
    Red: medium Sony MH755 tip
    Green: small Sony MH755​

    Moondrop Crescent with small Sony MH755 and Spinfit CP100 tips, deep insertion.png
    Deep insertion
    Red: small Sony MH755 tip
    Green: Spinfit CP100​

    I like the sound better with deeper insertion, which I can get with the small Sony tips. The front vent seems to have been partially blocked by the silicone sleeve in the measurement with the small Sony. Here’s what it looks like when it’s blocked more:

    Moondrop Crescent with small Sony MH755 tips, front vent blocked.png
    Red: Front vent blocked​

    The Sony tips aren’t an exact fit for the Crescent’s nozzle, so it’s a bit tight. I can avoid blocking the front vent by not fitting the sleeve all the way to the base of the barrel. This also helps with getting a deeper insertion in the ear to avoid frequencies where the resonance makes vocals too sibilant.

    Moondrop Crescent with Sony hybrid tips.jpeg
    Sony hybrid tip not pushed all the way in​

    I tried it with Comly foam. TX400 is a tight fit over the barrel, so my guess is that it deforms the foam in a way that hurts the response above 10 kHz. The universal-fit Comply Sport Pro with Smart Core works better here:

    Moondrop Crescent with Comply TX400, Sport Pro with Smart Core tips.png
    Red: Comply TX400
    Green: Comply Sport Pro with Smart Core​

    The sound with the TX400 is way too dark. Comply Sport Pro makes it sound dark too, but not as much. The resulting response with the foam tips is a lot easier to EQ, compared to silicone. The spike from the ear canal resonance balances the elevated low end. When the foam tip flattens that peak, it sounds like you turned up the bass. But if a system-wide equalizer were available, this is how I would use the Moondrop Crescent. For me, the Comply Sport Pro is the least uncomfortable of the tips.

    Moondrop Crescent, blocked vents.png
    Effect of blocked rear vents:
    Red: three rear holes blocked
    Green: three rear holes and bottom of strain relief blocked​

    This result is a bit disappointing. Playing with front vents and poking holes through meshes have acceptable risk with dirt cheap IEMs. But for a $30 model that takes weeks to deliver, I think I’ll let someone else go first with the non-reversible mods.

    Some comparisons
    Here’s what the frequency response looks like with the closest-sounding IEMs I have:

    LG QB3 AKG, Sony MH755, Philips SHE8105.png
    Red: LG Quadbeat 3 tuned by AKG
    Green: Sony MH755
    Blue: Philips SHE8105​

    I didn’t include the Sony MH1 in the comparison because my units don’t perform as designed and have to be fixed with mods, even though they behave like the typical samples that you can buy today. The Moondrop Crescent doesn’t sound as v-shaped as the others shown in the graph, especially the Philips. But the SHE8105 can be modded to sound close (see here: https://www.head-fi.org/threads/sou...odding-headphones.694963/page-4#post-14744462)

    SHE8105 tuned to usound vs Moondrop Crescent.png
    Red: Moondrop Crescent
    Green: Philips SHE8105 with reversible mods
    Gray: Usound target​

    It seems that the Crescent is tuned closer to Usound than to the 2017 Harman IE target. I prefer it when the 8105 is modded to sound closer to Harman than Usound, but with less bass. It doesn’t have the Crescent’s air in the top octave, but there’s not as much musical content up there, and a lot of folks can’t hear them anymore. Instead of the Crescent’s resonant spike, the energy is more spread out across a wider frequency band. The 8105 mod has a smoother and livelier response up to 12k, where there is more to be heard. I haven’t decided whether I like the broad peak around 3k.

    I'll update this report after I spend more time with the Moondrop Crescent. I've only been listening to it for two weeks.

    Update, March 4:

    The rear cup can be pried off with a little effort, but you have to be very, very careful. Use too much force and you will rip the wires off the driver and you'll have to solder them back in. The rear volume can be reduced. This will reduce the bass further. See the discussion in this post in the Moondrop IEMs thread: https://www.head-fi.org/threads/moo...pressions-thread.894139/page-93#post-14815773


    With the reduced bass, foam tips don't make it sound as dark anymore.

  2. spion
    A less bassy, more consistent MH1C
    Written by spion
    Published Feb 21, 2019
    Pros - deep bass
    clear mids
    close to harman curve
    smooth treble with sparkle
    Cons - can be a bit bright
    bass isn't super lovable
    You heard about the Sony MH1. You bought the hype, maybe even twice. You bought the IEM, and expected this wonderful sound. Instead what you got was a disappointment.

    You might like the well balanced Moondrop Crescent better. A beautifully built Harman take on that perfectly smooth MH1 sound that everyone was raving about. But this time, its done right.

    The bass is warm and deep, largely following the Harman target (Its actually closer to oratory1990's USound target, which is very similar). There is ever so slight mid-bass boost. Its still in perfect balance with the rest of the sound. Is the bass fast? Not really, but its not too bad. Is it bloated? Ever so slightly, but nowhere near most IEMs on the market. Think of it as a pleasant bump, a gentle nod to bassheads.

    The mids are again in perfect balance with the rest. There is slight preference for female rather than male vocals in the presence region - male vocals might feel slightly recessed. Based on the bass and treble you would think the sound is slightly V shaped - and it is, yet the mids are coming through very clearly.

    The Crescent's treble is its biggest advantage over other IEMs. Its quite smooth sounding, with just a single peak similar to Sony MH1C. Yet it somehow manages to keep this peak under control - it only adds some sparkle. Fans of Sennheiser over-ears might find it a touch too bright, but to me it sounds very nice.

    I measured the Crescent with Dayton IMM-06 and added Sony MH1C for comparison:


    The green line is the MH1C you would probably get if you buy one. Very boosted bass and muted treble. No wonder people are disappointed when they get a MH1C, this is not really a great sound! Its usable when out and about - the bass boost is a bit more acceptable then, but for normal use it just dominates everything else.

    The red line is a good copy of MH1C And its almost perfectly balanced - bass is nice and warm, mids are heavenly and treble is smooth and refined... for the most part. Its just a tiny bit shouty - the 3K peak is a bit over the top. Unfortunately, in my experience, only 1 in 5 copies are like this.

    And then we have the Crescent, correcting the flaws of MH1C, adding some mid presence (the DF raise in the mids starting at 600Hz) as well as the extra sparkle and air.

    Note: the peak is at 9K due to measurement depth, When listening in the ear it might be in a different position and will probably not be as strong. Depending on your ear canal and tips used, it could be anywhere between 6.5KHz and 8.5KHz. The extra brightness compared to MH1C continues all the way to 12KHz. This results with extra sparkle and some air. On half of the music I listen to, this is a slight advantage. On the other half a slight disadvantage - bright tracks sound a smidgen too bright. One thing is certain though - the crescent is slightly brighter than the MH1, which is already considered to have decent amounts of upper treble. Will it be too much for you? It depends on your ear canal length and sensitivity. Probably not, its really very subtle. But its possible.

    Lets look at a quick recap of the non-sound aspects:

    Cable: I got the gold color with a black cable. The cable is non-replaceable, with pretty bad microphonics. However, it looks durable and is tangle-free.

    edit: If you're up for modding, these threaded MMCX connectors fit perfectly into Crescent's threaded strain-relief hole: https://www.aliexpress.com/item/MLL...MMCX-Earphones-With-Built-in/32905370386.html

    Left: Stock Crescent with black cable and stock tips.
    Right: Modded Crescent with mmcx terminals, 6 core MMCX cable and Sony MH1C tips​

    Build: Metal construction, solid and heavy. Feel like a tank. I find it hard to imagine these breaking, ever!

    Tips: Only two sizes included - medium-small and medium. If you use very large tips, you might need to look elsewhere for alternative ones. I recommend the Sony hybrid tips as they make the treble even smoother.

    Comfort: Very comfortable, almost to the point where its possible for me to sleep with them. However the nozzles are a bit on the large size and may be uncomfortable for those with smaller ears. Changing the tips to Sony hybrid tips should work fairly well in fixing that since they stay further away from the housings.

    Some comparisons:

    * to Sony MH755 - Crescent's treble is much smoother. The 3K peak is less pronounced which helps the Crescent avoid mh755's shoutiness. There is a bit more mids in general, and the body extends all the way to the bass. If you like mh755's bass you'll find Crescent's a bit too much
    * to Sony MH1 - Almost the same sound, but with more brightness and sparkle
    * to TRN v80: Much better tonality. TRN v80 mids are wrong and dull and treble is hotter than the sun almost to the point of being unusable even with foam tips. Crescent's treble is heavenly in comparison. TRN's bass, however, is much nicer, with more texture and detail and less smearing
    * to KZ ed16 - Similar problems in the treble region like TRN v80, which the Crescent doesn't have. Mids and presence more correct on the Crescent. Bass of KZ ED16 is slightly nicer, less boosted

    Final verdict:

    Will this IEM be right for you? If you don't mind a slight mid-bass boost, and a bit of extra treble sparkle and air, the answer is probably yes. If you're a Harman target junkie on a budget, definitely absolutely yes. But even if the answer to the above questions is no, for the money I think its worth giving a shot. Its truly an outstanding IEM for the price.
    1. View previous replies...
    2. spion
      spion, Jun 24, 2019
    3. NeonHD
      Yeah I've read that article a lot of times, but I still refuse to believe this, because the general consensus (i.e. most people on head-fi) is that the MH1C is a bassy IEM. The idea that 90% of MH1C users got a bad QC pair just doesn't stick.
      NeonHD, Jun 24, 2019
    4. spion
      You can believe anything you like, its a matter of perspective :) Either way, the Crescent is very different from the *average* MH1C (regardles of whether the average MH1C was Sead's intended design or not) based on my... erm 8 pairs at this point I think (1 perfect, 1 inbetween and 6 "bad"). Of those 8 pairs, 2 are MH1s bought 2015 (1 in-between good and bad), 2 are MH1Cs bought 2016 and 4 are MH1Cs bought end of 2018 (1 good). So I think I have a decent enough sample size, but you never know.
      spion, Jun 24, 2019
      NeonHD likes this.


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