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Astell & Kern AK HC4 AKM AK4493S 3.5&4.4mm Dual Output
29.5mm x 64.5mm x 14.5 mm Moon Silver

GENERAL SPECIFICATIONS

Model
AK HC4
Body Color
Moon Silver
Body Material
Aluminum
DAC
AKM AK4493S
Sample rate
PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample)
DSD Native : DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo
Output Level
Unbalanced 2Vrms / Balanced 3Vrms (Condition No Load)
Input
USB Type-C (Supports UAC 1.0 and UAC 2.0)
Output
3.5mm (Unbalanced), 4.4mm (Balanced, Only 5-pole supported)
Dimensions
29.5mm[W] x 64.5mm[H] x 14.5mm[D]
Weight
About 1.09oz (31g)

Frequency Response
±0.062dB (Condition : 20Hz~20kHz) Unbalanced │ ±0.063dB (Condition : 20Hz~20kHz) Balanced
±0.066dB (Condition : 20Hz~70kHz) Unbalanced │ ±0.067dB (Condition : 20Hz~70kHz) Balanced
Signal to Noise Ratio
118dB @ 1kHz, Unbalanced │ 118dB @ 1kHz, Balanced
Crosstalk
-134dB @ 1kHz, Unbalanced │ -136dB @ 1kHz, Balanced
THD+N
0.0005% @ 1kHz, Unbalanced │ 0.0009% @ 1kHz, Balanced
IMD SMPTE
0.0005% 800Hz 10kHz (4:1) Unbalanced │ 0.0004% 800Hz 10kHz (4:1) Balanced
Output Impedance
Unbalanced Out 3.5mm (0.9ohm) │ Balanced Out 4.4mm(1.6ohm)

Etc:
- Audio was NOT muted during the measurement.
- The image/specification may be changed without notice to improve product performance and quality.