Moondrop UltraSonic specifications and in-depth review

Moondrop UltraSonic

Manufacturer: Moondrop

The Moondrop UltraSonic are true wireless in-ear earbuds designed for listeners who want a cable-free experience without sacrificing audio fidelity. Built around a 13 mm driver unit, these earbuds cover a frequency range of 20 Hz to 20000 Hz and deliver a sound pressure level of 106 dB/mW, making them a technically grounded option within the wireless earbuds category.

Connectivity runs on Bluetooth 5.3 with LDAC support, enabling high-resolution audio transmission, while audio latency is rated at 55 ms and the maximum wireless range reaches 10 m. Active noise cancellation and passive noise isolation work in tandem to reduce unwanted ambient sound, and an ambient sound mode can be enabled when environmental awareness is needed. The earbuds support fast charging via USB Type-C, with a 37 mAh cell providing up to 6 hours of playback and a 380 mAh charging case extending total use to 18 hours. Additional features include a noise-canceling microphone, mute function, voice prompts, ambient sound mode, and a travel bag included in the box.

Pros
  • Supports LDAC codec for high-resolution audio transmission over Bluetooth
  • Both active noise cancellation and passive noise isolation are included, offering two layers of sound blocking
  • Fast charging is supported, and a full charge takes just 1 hour
  • The charging case provides an additional 18 hours of battery life, bringing total playback time to 24 hours
  • Ambient sound mode allows environmental awareness without removing the earbuds
  • A travel bag is included in the package, adding practical value out of the box
Cons
  • Bluetooth range is limited to 10 m, which may be restrictive in larger spaces
  • Wireless charging is not supported, requiring a cable for every charge
  • No in/on-ear detection means playback does not pause automatically when an earbud is removed
  • The find device feature is absent, making it harder to locate misplaced earbuds
  • Spatial audio, Dolby Atmos, and Dirac Virtuo are not supported, limiting immersive audio options
  • NFC pairing and fast pairing are both unavailable, making initial device setup a manual process
Who is this for?

The Moondrop UltraSonic is well suited to listeners who prioritize audio fidelity in a wireless form factor, particularly those with LDAC-compatible devices who want to stream high-resolution audio without a wired connection. The combination of active noise cancellation and passive noise isolation makes it a practical choice for commuters or office users who regularly deal with ambient noise and need reliable sound blocking throughout the day. With fast charging, a travel bag included, and a total battery system that reaches 24 hours, it also fits users who are frequently on the move and need a dependable, low-maintenance listening setup.

Who is this NOT for?

Users who rely heavily on spatial audio or immersive sound processing — such as those who use Dolby Atmos or Dirac Virtuo regularly — will find this product lacking, as none of these formats are supported. The absence of in/on-ear detection and a find device feature makes it less ideal for users who frequently switch between tasks or tend to misplace their earbuds. Additionally, those who expect seamless device switching or prefer wireless charging for added convenience will find the connectivity and charging options more limited than they may require.

Design:

Fit In-ear
has no wires or cables
are neckband earbuds
wingtips included
has RGB lighting
has stereo speakers
has UV light
Has a display

The Moondrop UltraSonic adopts a true wireless, in-ear fit with no cables or neckband connecting the two earbuds. Each earbud houses a stereo speaker, while wingtips are not included in the package. The design omits RGB lighting, a UV light, and any built-in display, keeping the overall form straightforward and focused on core listening functionality.

Sound quality:

has active noise cancellation (ANC)
has passive noise reduction
driver unit size 13 mm
lowest frequency 20 Hz
highest frequency 20000 Hz
supports spatial audio
has Dolby Atmos
has Dirac Virtuo
sound pressure level 106 dB/mW
has a neodymium magnet

The Moondrop UltraSonic uses a 13 mm driver unit and covers the full standard audible spectrum from 20 Hz to 20000 Hz, with a sound pressure level of 106 dB/mW. Both active noise cancellation and passive noise reduction are supported, giving the earbuds two layers of ambient sound management. The drivers do not use a neodymium magnet, and the earbuds offer no support for spatial audio, Dolby Atmos, or Dirac Virtuo processing.

Power:

Battery life 6 hours
Battery life of charging case 18 hours
charge time 1 hours
battery power 37 mAh
battery power (charging case) 380mAh
has wireless charging
Has a solar power battery
has a battery level indicator
has a rechargeable battery

The Moondrop UltraSonic earbuds carry a 37 mAh rechargeable battery that provides up to 6 hours of playback per charge, while the 380 mAh charging case extends total available listening time to 18 hours. A full charge takes 1 hour, and a battery level indicator is included to help track remaining power. The earbuds do not support wireless charging and have no solar power capability.

Connectivity:

has fast pairing
Has USB Type-C
Bluetooth version 5.3
has LDAC
has LDHC
has Bluetooth LE Audio
has aptX Adaptive
has aptX Low Latency
has aptX HD
has aptX
has aptX Lossless
audio latency 55 ms
has aptX Voice
has Auracast
maximum Bluetooth range 10 m
supports Bluetooth pairing using NFC
Can be used wirelessly
has AAC

The Moondrop UltraSonic connects wirelessly via Bluetooth 5.3 with a maximum range of 10 m and an audio latency of 55 ms. Supported audio codecs include LDAC and AAC, while aptX in all its variants — including aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, and aptX Voice — is not supported, nor is LDHC or Bluetooth LE Audio. The earbuds use USB Type-C for wired charging but do not offer fast pairing, NFC pairing, or Auracast functionality.

Features:

has ambient sound mode
has in/on-ear detection
has find device feature
Supports fast charging
can read notifications
has a mute function
can be used as a headset
control panel placed on a device
Has voice prompts
travel bag is included
Has an in-line control panel
Has a temperature sensor
Has a built-in camera remote control function

The Moondrop UltraSonic includes ambient sound mode, a mute function, voice prompts, and can be used as a headset, with controls accessible through a control panel placed on the device itself rather than an in-line panel on a cable. Fast charging is supported, and a travel bag is included in the box. The earbuds do not offer in/on-ear detection, a find device feature, notification readout, a temperature sensor, or a built-in camera remote control function.

Microphone:

has a noise-canceling microphone

The Moondrop UltraSonic is equipped with a noise-canceling microphone, which helps reduce background noise during calls and voice input.

Final Verdict

The Moondrop UltraSonic presents a technically capable option within the wireless earbuds category, built around a thoughtful combination of active noise cancellation, passive noise isolation, and LDAC support for high-resolution audio streaming. Its fast charging, 24-hour total battery system, and included travel bag reflect a practical design suited to everyday use on the go. While it does leave out certain features — such as spatial audio support, in/on-ear detection, and wireless charging — these omissions are consistent with a product focused on audio performance fundamentals rather than a broad feature checklist. For listeners who prioritize clean, high-fidelity wireless audio with dependable noise management, the Moondrop UltraSonic is a coherent and well-specified choice.

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