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Moondrop
Moondrop CHU II
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Key specs
Material Chassis Primary
Zinc alloyResin29%Plastic24%Aluminum18%Zinc alloy4%
Zinc alloy appears on 4% of the 49 in-ear monitors we've cataloged (of 38).
Connection Type
Wired-3.5mmMost commonWired-3.5mm95%Bluetooth5%
Wired-3.5mm is the most common — on 95% of the 37 in-ear monitors we've cataloged (of 38).
Ear Tip Material
SiliconeMost commonSilicone65%Memory foam20%Foam12%Others4%
Silicone is the most common — on 65% of the 51 in-ear monitors we've cataloged (of 38).
Has Microphone
NoMost commonFalse68%True32%
False is the most common — on 68% of the 34 in-ear monitors we've cataloged (of 38).
Build
- Material Chassis Primary
- Zinc alloy
Connectivity
- Connection Type
- Wired-3.5mm
- Cable Type
- 3.5mm single-ended, 2-pin detachable
Design
- Ear Tip Material
- Silicone
- Color Options
- Black
- Ear Tip Sizes Included
- 11mm, 12mm, 13mm
- Earbud Form Factor
- In-ear
- Detachable Cable
- Yes
- Wearing Style
- Over-ear (cable up)
Microphone
- Has Microphone
- No
Sound
- Driver Size
- 10 mm
- Driver Count
- 1
- Driver Type
- Dynamic
- Frequency Response
- 20-20000 Hz
- Frequency Response High Hz
- 20000 Hz
- Frequency Response Low Hz
- 20 Hz
- Frequency Response Signature
- V-shaped
- Impedance
- 18 Ω
- Sensitivity
- 119 dB/mW
Features
- Inline Controls
- No
Identity
- Model Number
- CHU II
Release
- Date
- 2023-07-06
- Msrp Usd
- 18.99 USD
- Year
- 2023
Lab data
How we test ›Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
Moondrop CHU II Frequency Response (measured on a B&K 5128)
Click a line or a legend entry to highlight it. Click again to clear.Tap a legend entry to highlight its line. Tap again to clear.
Measured frequency response (dB relative) against the SoundGuys Headphone Preference Curve. When the measurement goes above the dashed line, that frequency is louder than our preference curve, and when it goes below: it's quieter. Use the curve for comparison purposes only, as your taste may vary.
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | 5.9 |
| 25 | 5.6 |
| 32 | 5.1 |
| 40 | 4.6 |
| 50 | 3.9 |
| 63 | 3.1 |
| 80 | 2.2 |
| 100 | 1.1 |
| 125 | -0.0 |
| 160 | -1.8 |
| 200 | -1.3 |
| 250 | -2.2 |
| 315 | -2.9 |
| 400 | -4.1 |
| 500 | -4.8 |
| 630 | -3.9 |
| 800 | -2.6 |
| 1000 | -0.8 |
| 1250 | 1.4 |
| 1600 | 3.9 |
| 2000 | 6.1 |
| 2500 | 9.2 |
| 3150 | 11.1 |
| 4000 | 10.3 |
| 5000 | 6.1 |
| 6300 | -0.1 |
| 8000 | -0.1 |
| 10000 | 3.5 |
| 12500 | -1.3 |
| 16000 | -16.5 |
| 20000 | -32.7 |
Moondrop CHU II Attenuation (measured on a B&K 5128)
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Solid lines: passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.
| Frequency (Hz) | Attenuation (dB) |
|---|---|
| 21 | 16.2 |
| 26 | 9.0 |
| 33 | 3.4 |
| 41 | 3.7 |
| 52 | 4.6 |
| 65 | 5.1 |
| 82 | 6.0 |
| 103 | 6.7 |
| 130 | 6.9 |
| 163 | 5.5 |
| 205 | 7.2 |
| 259 | 9.5 |
| 325 | 11.0 |
| 410 | 10.8 |
| 516 | 9.9 |
| 613 | 9.1 |
| 772 | 13.9 |
| 972 | 16.0 |
| 1220 | 17.3 |
| 1540 | 22.5 |
| 1940 | 27.6 |
| 2440 | 28.6 |
| 3070 | 26.5 |
| 3870 | 22.7 |
| 4870 | 26.0 |
| 6130 | 33.2 |
| 7720 | 25.4 |
| 9720 | 24.5 |
| 12200 | 22.5 |
| 15400 | 40.2 |
| 19400 | 43.3 |
SoundGuys review
Isolation5.8
Comfort & fit7.2
Connectivity6.5
Design8.5
Portability8.0
Features5.6
The verdict
A satisfactory upgrade over the Moondrop Chu, the Moondrop Chu II now fit better and ship with a removable cable. They're reasonably comfortable and sound good. Plus, they're cheap!
✓Liked: Price, Frequency response, Fit
✕Could be better: A little heavy, Average isolation
Owners
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Owner reviews are not paid for, not solicited from specific owners, and not rewritten by us: at most we proofread typos, which is shown on the review’s own page and which the author can undo. The commission SoundGuys may earn on this page comes from retail links, never from owner reviews.
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Questions from readers
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