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Douk Audio K5 PC DAC Headphone Amplifier Digital to Analog Converter with USB & Optical Input DSD256 for Amplifiers, Speakers, Mac, Computer (K5)

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Douk Audio K5 USB DAC & Headphone Amp: Featuring USB and SPDIF optical inputs, as well as optical, RCA and 6.35/3.5mm jack outputs, the K5 serves as a high-performance headphone amplifier, a USB DAC, a preamp, but also a USB to optical converter to transmit the high-quality audio from the computer to those audio devices only with SPDIF digital input such as CD players, amplifiers and active speakers etc.
High-end Chipset and Top-level Parameters: The K5 adopts ESS9038Q2M (DAC), SA9312 (DSP), OPA1678 (LPF) and SGM8262 (amp) op-amps, and supports PCM 32bit/384kHz high-resolution decoding and DSD256 playback. Its excellent circuit design ensures superior performance with a SNR over 121dB, a low noise floor of only 3V and an incredibly low THD of 0.0007%, K5 delivers an exceptional listening pleasure with its ultra-pure sound.
Strong Power and High/Low Gain Modes: K5 supports dual 6.35/3.5mm headphone outputs and provides robust power of 560mW/470mW@32 per channel to effortlessly unl

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Brand: Douk
AudioModel: K5Audio
input: USB/Fiber
OpticalAudio output: Optical/Stereo RCA/ 6.35 mm
& 3.5 mm headphone jackChipsets: ESS9038Q2M+SA9312Format
and sampling rate supported:
USB: PCM 44.1 -384K/16-32bit, DSD64-256SPDIF: PCM 44.1 -192K/16-24bit, DSD64 (DOP)
Frequency response: 20-40kHz(
0.3 dB)Treble adjustment: 3K-20KHz
/ 10dBBass adjustment: 20-250Hz
/ 10dBPure mode: support (Tone control not valid)
Matched headphone impedance: 16-600RCA
OutputOutput level:
2VrmsTHD+N: <0.0007%SNR: > 120dBChannel
Separation: <-80dBNoise floor: <3V (1KHz@300ohm)Headphone outputGAIN Mode: High (0dB) / Low (-6dB)Output power in High Gain Mode (THD+N<1%):560mW @32 (6.35mm jack output)370mW @32 (3.5mm jack output)Peak voltage:4.25Vrms@32ohm (6.35mm Jack output)3.45Vrms@32ohm (3.5mm jack output)THD+N: <0.0008% @32SNR: > 121dB @32Channel
Separation: <-65dB
@32Noise floor: <3VWorking
voltage: DC 5V (2A)
Power interface: USB (type-c) / DC 5.5 * 2.1 mmDimensions (W*D*H): 95*92*50mm / 3.74 * 3.62 * 1.97 inPackage dimensions(W'D*H): 225*145*80mm/ 8.86 * 5.71 * 3.15 inNet weight: 228g/
0.50 lbPackage weight: 500g/ 1.10 lbPacking
List: 1*K51*Power Adapter1*USB Cable1*Optical Cable1*User Manual

Additional Information
First Listed on Newegg	April 14, 2026

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Return for refund within: 30 days
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Item#: 9SIC48UKV03508