The AK HC5 embodies Astell and Kern’s audio philosophy and precise engineering in a compact form, delivering a level of perfection beyond its predecessors. Equipped with a flagship-grade DAC and optimized power control, it delivers flawless sound performance unmatched by any other USB DAC.
DAC
AKM AK4191EQ + AK4499EX
Sample rate
PCM : 8kHz ~ 768kHz (8/16/24/32bits per Sample)
DSD Native: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo / DSD512(1bit 22.4MHz) Stereo
Output Level
Unbalanced 2.5Vrms / Balanced 5Vrms (Condition No Load)
Input
USB Type-C (Supports UAC 2.0 and UAC 1.0)
Output
3.5mm (Unbalanced), 4.4mm (Balanced, Only 5-pole supported)
Dimensions
32mm[W] x 64.3mm[H] x 16mm[D]
Weight
About 1.62oz (46g)

Frequency Response
±0.006dB (Condition : 20Hz~20kHz) Unbalanced, Balanced │ ±0.06dB (Condition : 20Hz~70kHz) Unbalanced, Balanced
Signal to Noise Ratio
121dB @ 1kHz, Unbalanced │ 125dB @ 1kHz, Balanced
Crosstalk
-139dB @ 1kHz, Unbalanced │ -141dB @ 1kHz, Balanced
THD+N
0.0005% @ 1kHz, Unbalanced │ 0.0004% @ 1kHz, Balanced
IMD SMPTE
0.0006% 800Hz 10kHz (4:1) Unbalanced │ 0.0005% 800Hz 10kHz (4:1) Balanced
Output Impedance
Unbalanced Out 3.5mm (0.5ohm) │ Balanced Out 2.5mm 4.4mm