AK HB1
Portable Bluetooth DAC/amp with 3.5 mm single-ended and 4.4 mm balanced outputs, built around an ESS ES9281AC PRO DAC. It suits listeners who want to run IEMs or headphones from phones, PCs and game consoles, wirelessly or over USB.
- 3.5 mm unbalanced and 4.4 mm balanced outputs
- ESS ES9281AC PRO DAC, native DSD256 and 32-bit/384 kHz over USB
- Bluetooth 5.0 with LDAC, aptX HD, aptX, AAC, SBC
- Two-device multipoint, MQA renderer, car mode
- USB-C and Lightning cables included; UAC 1.0 and 2.0
- 600 mAh battery, about 6 hours playback
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The HB1 is a compact Bluetooth DAC/amp that pairs with a phone or PC over Bluetooth 5.0 (Qualcomm CSR8675 chipset) and drives wired IEMs and headphones. It handles LDAC, aptX HD, aptX, AAC and SBC, and can hold connections to two devices at once. Used over USB, it works as a plug-and-play DAC with native DSD256 and PCM up to 32-bit/384 kHz. It also acts as a hardware MQA renderer, though a compatible software decoder is needed to unfold the stream.
Outputs are a 3.5 mm unbalanced jack and a 4.4 mm balanced jack, rated at 2 Vrms and 4 Vrms respectively with no load. The USB-C input accepts both UAC 1.0 and UAC 2.0, which makes it usable with consoles such as PlayStation and Switch. An interchangeable shielded cable is supplied in USB-C and Lightning versions. A built-in MEMS microphone with cVc 8.0 noise suppression covers calls, and a 4-pole in-line mic works while USB DAC mode is active.
Other functions include a car mode that powers the unit on and off with the vehicle's AUX connection, charging that can be shared with a playback device, and two LEDs that show file type and battery level. The AK Control app sets device priority, volume, user EQ, car mode and DAC filter. The body is polycarbonate with an aluminum volume wheel, and firmware can be updated.
Video
Specifikācijas
- Zīmols
- Astell&Kern
- Modelis
- AK HB1
- Kategorija
- Austiņas
General
- Model
- AK HB1
- Body color
- Shadow Black
- Body material
- Polycarbonate (Body) / Aluminum (Volume Wheel)
- DAC
- ESS ES9281AC PRO
- Firmware
- Firmware upgrade supported
Connectivity
- Bluetooth chipset
- Qualcomm CSR8675
- Bluetooth version
- 5.0
- Bluetooth codecs
- LDAC, aptX HD, aptX, AAC, SBC
- Bluetooth profiles
- A2DP, AVRCP, HFP
- Multi-point
- Up to two devices
Inputs
- Input
- USB Type-C (Supports UAC 1.0 and UAC 2.0)
Outputs
- Headphone outputs
- 3.5mm (CTIA 4-pole), 4.4mm (5-pole only)
- Output level, unbalanced
- 2Vrms (no load)
- Output level, balanced
- 4Vrms (no load)
- Output impedance
- Unbalanced 3.5mm 2.5ohm / Balanced 4.4mm 2ohm
Audio
- PCM sample rate
- 8kHz ~ 384kHz (8/16/24/32bits per sample)
- DSD (native)
- DSD64, DSD128, DSD256 (Stereo)
- Frequency response
- ±0.135dB (20Hz~20kHz) Unbalanced / ±0.136dB Balanced
- S/N
- 117dB Unbalanced / 118dB Balanced @ 1kHz
- Crosstalk
- -112dB @ 1kHz, Unbalanced and Balanced
- THD+N
- 0.0005% @ 1kHz, Unbalanced and Balanced
- IMD SMPTE
- 0.0003% 800Hz 10kHz (4:1), Unbalanced and Balanced
Power
- Battery capacity
- 600mAh 3.8V Li-Polymer
- Charge time
- about 1.5hours
- Playback time
- about 6hours (Standard : AAC)
Physical
- Dimensions (excl. wheel)
- 33 x 68.4 x 16.5mm
- Dimensions (incl. wheel)
- 39.8 x 68.4 x 16.5mm
- Weight
- About 1.41oz (40g)
In the box
- Cables
- Interchangeable cable (Type-C and Lightning included)