

The NiceHCK Octave features an ES9039Q2M DAC chip, supporting up to 768kHz/32bit PCM and DSD256. It uses two SGM8262 op-amps for headphone amplification, delivering up to 550mW@32Ω from the balanced output. Its power supply is impressive for a USB DAC dongle, with the DAC’s analog section and headphone amp powered separately to minimize high-frequency noise crosstalk from digital circuits. Multiple ultra-low-noise LDOs ensure stable power and minimal interference.
The Octave has enough power to drive full-sized headphones to satisfying levels, yet its output doesn’t hinder sensitive IEMs. The solid build and bold design are appealing, and the color choices are a nice touch.
Sound wise: The Octave is pure and transparent like water, reflecting only what’s put into it. It’s not for everyone, as it may lack warmth or richness in the midrange and deep dynamics depending on the chain. Still, I find it pairs really well with my Pixel. Overall, it’s a well-made and highly capable dongle with plenty of power and technical skill. The app can offset its stock neutrality, adding warmth or brightness depending on the direction you prefer.
Specs:
Input: Type-C USB
Outputs: 3.5mm / 4.4mm
DAC: ES9039Q2M
Op-Amps: 2 × SGM8262
Formats: PCM 768kHz/32bit, DSD64/128/256
Frequency Response: 20Hz–40kHz
Dynamic Range: 130dB
SNR: 130dB
Distortion: 120dB (4.4mm), 120dB (3.5mm), 0.0001% (600Ω)
Output Power: 150mW@32Ω (3.5mm), 550mW@32Ω (4.4mm)
Weight: 25g (cable excluded)
Compatible with Android, HarmonyOS, Windows 10/11, iOS, macOS, ETC.
What’s in the box:
The accessories included are as followed, a high-quality USB Type-C cable crafted from pure silver-plated copper in a 4-strand design, with aluminum plugs that match the Octave’s look, along with a full-size USB adapter.






















