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Moondrop Rays specifications and in-depth review

Moondrop Rays

Manufacturer: Moondrop

The Moondrop Rays are in-ear monitors built around a hybrid 1DD + 1PD driver configuration, pairing a dynamic driver with a planar magnetic driver in a 3D-printed resin shell. The earphones include a built-in microphone, making them functional for calls and voice use without any additional hardware.

On the technical side, the Rays operate at 30 Ohms impedance with a stated total harmonic distortion of ≤0.05% at 1kHz, and cover a frequency range from 20 Hz to 20000 Hz. The cable measures 1.2 meters in length, terminates in a USB-C connector, and uses a 2-Pin (0.78 mm) pin connector, though it is not detachable. No travel bag is included, and there is no in-line control panel on the cable.

Pros
  • The hybrid driver setup combining a dynamic driver and a planar magnetic driver offers two distinct transducer technologies within a single earphone
  • A built-in microphone adds hands-free usability without requiring a separate headset
  • The 3D-printed resin shell allows for a precisely shaped enclosure that can conform well to intended ergonomic designs
  • Low total harmonic distortion rated at 0.05% or below at 1kHz reflects a clean signal reproduction according to the stated specification
  • The USB-C termination aligns with widely adopted modern connector standards, reducing the need for adapters on compatible devices
Cons
  • The cable is not detachable, so any damage to it cannot be resolved by simply swapping in a replacement
  • No in-line control panel is present on the cable, meaning playback and volume adjustments must be handled directly on the source device
  • No travel bag is included, offering no dedicated storage or protection solution out of the box
  • The 1.2-meter cable length may feel restrictive depending on how and where the source device is positioned during use
Who is this for?

The Moondrop Rays are well-suited to listeners who want to experience a hybrid dynamic and planar magnetic driver configuration in an in-ear monitor form factor, as the combination of two distinct transducer types targets a specific kind of technical curiosity and sonic variety. Users who frequently take calls or need voice communication on the go will find the built-in microphone a practical convenience. The USB-C termination also makes these a reasonable match for users whose daily devices — phones, laptops, or DACs — rely on that connector standard, keeping the setup straightforward without additional adapters.

Who is this NOT for?

Users who value cable flexibility will find the non-detachable cable a significant limitation, as any wear or damage to the cable requires replacing the entire unit rather than just the cable itself. Those who frequently listen on the move and prefer to adjust volume or skip tracks without reaching for their source device will miss the absence of an in-line control panel. Additionally, users who expect a complete carry solution out of the box — particularly those who travel frequently — will be inconvenienced by the lack of an included travel bag for safe storage and transport.

General info:

Driver configuration 1DD + 1PD
Type of drivers Dynamic driver (DD), Planar magnetic
Shell material/process 3D-printed resin
has a built-in microphone ✓
travel bag is included ✕
Has an in-line control panel ✕

The Moondrop Rays feature a hybrid driver setup combining one dynamic driver and one planar magnetic driver, housed in a shell crafted through a 3D-printed resin process. A built-in microphone is included, adding hands-free functionality without requiring any external accessory. The earphones do not come with an in-line control panel on the cable, and no travel bag is included in the package.

Specifications:

drivers count 2
impedance 30 Ohms
Total harmonic distortion (THD) ≤0.05% (@1kHz)
lowest frequency 20 Hz
highest frequency 20000 Hz

The Moondrop Rays house a total of two drivers and operate at an impedance of 30 Ohms, making them straightforward to drive from a range of sources. Total harmonic distortion is rated at ≤0.05% at 1kHz, indicating a low level of signal coloration. The frequency response spans from 20 Hz on the low end up to 20000 Hz at the top of the range.

Cable:

Connector type USB-C
Pin connector 2-Pin (0.78 mm)
cable length 1.2 m
has a detachable cable ✕

The cable on the Moondrop Rays measures 1.2 meters in length and terminates in a USB-C connector at the source end, while connecting to the earphones via a 2-Pin (0.78 mm) pin connector. The cable is not detachable, meaning it cannot be swapped out for an aftermarket alternative.

Final Verdict

The Moondrop Rays present an technically interesting proposition in the in-ear monitor category, anchored by their hybrid 1DD + 1PD driver configuration that brings together dynamic and planar magnetic technologies in a 3D-printed resin shell. The inclusion of a built-in microphone adds a layer of everyday practicality that extends their appeal beyond purely critical listening. That said, the fixed cable design and the absence of in-line controls place real-world convenience constraints on the user experience, and those who prioritize modularity or on-cable management will need to weigh those trade-offs carefully. Overall, the Moondrop Rays are a focused offering aimed at listeners with a genuine interest in hybrid driver technology, provided they can accommodate the product's practical limitations in their daily use.