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Enjoy premium sound reproduction while on the move with the Astell & Kearn AK HC4, a portable USB DAC cable that provides a true Hi-Fi experience on smartphones and PCs. The AK HC4 delivers builds upon the advantages of its highly acclaimed predecessors, delivering an even more perfected sound in various usage scenarios through advanced design.
Astell & Kern AK HC4 Specs
Key Specs
| Form Factor | Inline Adapter |
| Converter Type | D/A Converter |
| Number of Channels | 2x D/A |
| Maximum Sampling Rate | 384 kHz / 32-Bit (PCM) |
| Number of Microphone Inputs | No |
| Analog Audio I/O | 1x 1/8" / 3.5 mm TRS Unbalanced Headphone Output 1x 4.4 mm TRRRS Balanced Headphone Output |
| Digital Audio I/O | No |
| Converter Type | D/A Converter |
| Number of Channels | 2x D/A |
| Converter Circuitry | D/A Chipset: 1x AKM |
| Display | No |
| Maximum Sampling Rate | 384 kHz / 32-Bit (PCM) |
| Number of Microphone Inputs | No |
Connectivity
| Analog Audio I/O | 1x 1/8" / 3.5 mm TRS Unbalanced Headphone Output 1x 4.4 mm TRRRS Balanced Headphone Output |
| Phantom Power | No |
| Digital Audio I/O | No |
| Host Connection | 1x USB-C (Class-Compliant) |
| USB (Non-Host) | No |
| Sync I/O | No |
| Network I/O | No |
| MIDI I/O | No |
| Expansion Slots | No |
| Wireless | No |
Performance
| Frequency Response | 1/8" / 3.5 mm Headphone D/A Converters: 20 Hz to 20 kHz ±0.062 dB (Unbalanced) 20 Hz to 70 kHz ±0.066 dB (Unbalanced) 4.4 mm Headphone D/A Converters: 20 Hz to 20 kHz 0.063 dB (Balanced) 20 Hz to 70 kHz 0.067 dB (Balanced) |
| Maximum Output Level | 1/8" / 3.5 mm Headphone Outputs: 2 Vrms 4.4 mm Headphone Outputs: 3 Vrms |
| Impedance | 1/8" / 3.5 mm Headphone : 0.9 Ohms (Unbalanced) 4.4 mm Headphone : 1.6 Ohms (Balanced) |
| SNR | Headphone Outputs: 118 dB (1 kHz, Unbalanced and Balanced) |
| THD+N | 1/8" / 3.5 mm Headphone Outputs: 0.0005% (Unbalanced) 4.4 mm Headphone Outputs: 0.0009% (Balanced) |
| Crosstalk | 1/8" / 3.5 mm Headphone Outputs: -134 dB (Unbalanced, at 1 kHz) Balanced Headphone: -136 dB (Balanced, at 1 kHz) |
| Distortion | IMD SMPTE: 0.0005% 800 Hz to 10 kHz (4:1) Unbalanced 0.0004% 800 Hz to 10 kHz (4:1) Balanced |
Digital Audio
| Sample Rates | Up to 384 kHz (PCM) 2.8 / 5.6 / 11.2 MHz (DSD) |
| Bit Depths | 8 / 16 / 24 / 32-Bit (PCM) 1-Bit (DSD) |
| Digital Audio Decoding | DSD, PCM |
Compatibility
| OS Compatibility | No |
| Mobile App Compatible | No |
| Power Requirements | USB Bus Power |
Physical
| Dimensions | 2.5 x 1.2 x 0.6" / 64.5 x 29.5 x 14.5 mm |
| Weight | 1.1 oz / 31.0 g |
Packaging Info
| Package Weight | 0.385 lb |
| Box Dimensions (LxWxH) | 5.1 x 4.6 x 1.8" |
In the Box
- Astell & Kern AK HC4 Portable Hi-Fi USB DAC Cable
- USB-C Cable
- Lightning Cable
- 2-Year Manufacturer Warranty
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