Astell&Kern
Astell&Kern HB1 Portable Headphone Amplifier
The Astell&Kern HB1 is a high-performance portable headphone amplifier delivering studio-quality sound for Hi-Res audio files via ESS ES9281AC PRO DAC. Supporting resolutions up to 32 bits / 384 kHz and DSD/MQA formats, it offers Bluetooth LDAC and aptX HD connectivity. With a symmetric 4 Vrms output, it easily powers demanding headphones, and its battery provides up to 6 hours of playback time. Compatible with USB-C and Lightning, the HB1 is a top choice for mobile audiophiles.
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Updated on May 18, 2026
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