Moondrop – Chu II DSP

Moondrop – Chu II DSP

The Moondrop – Chu II DSP is the USB-C version of Moondrop’s Chu II in-ear monitor, built for phones, tablets and laptops that have moved past the headphone jack. Where the standard Chu II ends in a 3.5 mm plug, this version ends in USB-C and puts digital signal processing in the cable, so the earphones connect digitally, convert and tune the sound themselves, and need no separate dongle or portable DAC to work with a modern device. The earphones themselves use a 10 mm high-performance dynamic driver with an aluminium-magnesium alloy composite diaphragm, housed in a zinc alloy cavity with a CNC-machined brass nozzle. Through the Moondrop Link 2.0 app, the DSP offers three preset tunings and online interactive tuning, so the sound can be adjusted in software rather than fixed at the factory.

Key Features

• USB-C connection with built-in DSP: Plugs directly into USB-C phones, tablets and computers, with digital processing in the cable and no separate adapter required.
• 10 mm dynamic driver: A high-performance dynamic driver with an aluminium-magnesium alloy composite diaphragm, tuned to Moondrop’s VDSF target response.
• Three DSP tuning presets: Switch between three preset tunings, and go further with online interactive tuning and custom settings in the Moondrop Link 2.0 app.
• Detachable 0.78 mm 2-pin cable: The cable unplugs at the earpieces, so a worn cable can be replaced without replacing the earphones.
• Zinc alloy cavity, brass CNC nozzle: A cast metal shell for rigidity and durability, with a precisely machined brass nozzle and a replaceable acoustic filter.
• 119 dB/Vrms sensitivity: High sensitivity at 18 ohms impedance means the Chu II DSP reaches comfortable volume directly from a phone or laptop.
• Built-in microphone: The USB-C cable carries a microphone for calls and voice use between listening sessions.

The Driver and the VDSF Target

Moondrop builds its tuning around measurement, and the Chu II follows the company’s VDSF target response, its house reference for a natural, balanced presentation. The 10 mm driver’s aluminium-magnesium alloy composite diaphragm is light and rigid, a combination that helps it stay controlled at high frequencies and extend the treble. The published frequency response is 15 Hz to 38,000 Hz, with an effective frequency response of 20 Hz to 20,000 Hz measured to the IEC60318-4 standard at -3 dB. Total harmonic distortion is rated at 0.5 percent or less at 1 kHz and 94 dB. In listening terms, expect the Chu II family character — clear, detailed sound with present bass and extended highs — with the exact balance adjustable through the DSP presets rather than fixed by the hardware alone.

DSP Tuning Through Moondrop Link 2.0

The DSP is what separates this model from the standard Chu II, and it changes how you live with the earphones. Out of the box the USB-C cable works as a normal digital earphone cable: plug it in and listen. Open the Moondrop Link 2.0 app and you can switch between three preset tunings developed for the Chu II DSP, apply your own equalisation, and explore online interactive tuning, including configurations shared through the app. That makes the Chu II DSP a useful tool for listeners who are still discovering their preferences: a bass-forward setting for a commute, a flatter setting for critical listening, and no hardware change needed to move between them. The app keeps the tuning process in one place, so adjusting the sound between devices stays straightforward.

Build, Nozzle and Replaceable Parts

The cavity is cast from zinc alloy, giving the small shells a dense, solid feel and a stable acoustic chamber that resists the flexing of plastic housings. At the front, the nozzle is machined from brass on CNC equipment; brass brings density and precision to the part the ear tip mounts on, and the acoustic filter at the nozzle can be replaced if it becomes blocked or damaged, which protects long-term clarity. The detachable cable connects with the widely used 0.78 mm 2-pin standard, so replacement and upgrade cables are easy to find and the earphones themselves survive a cable failure. Three pairs of silicone ear tips in small, medium and large are supplied, and choosing the size that seals properly is the single biggest factor in bass response and comfort.

Fit and Everyday Listening

With an impedance of 18 ohms and sensitivity of 119 dB/Vrms at 1 kHz, the Chu II DSP is easy to drive and does not need an amplifier; the USB-C digital connection handles the conversion that a phone without a headphone jack would otherwise need a dongle for. It suits the way most people now listen: streaming and stored music on a phone during a commute, video and calls on a laptop, and gaming or films on a tablet, all with the same pair. Fit the earpieces with the tip size that seals without pressure, keep the nozzle filter clean, and store the earphones in a case or pouch so the connectors and cable stay protected between uses.

The Moondrop Chu II DSP takes a proven budget in-ear monitor and removes its one modern inconvenience. You keep the metal build, the measured tuning and the detachable cable, and you gain a direct USB-C connection with sound you can reshape in the app whenever your taste changes.