Astell&Kern HB1 Accessories two corrugated pure aluminum ribbons

two corrugated pure aluminum ribbons per earcup with Viscodamp "Silent Metal" viscosity dampening for controlled

open-back Transducer type Orthodynamic Frequency response 8 Hz - 85 kHz Sensitivity 94 dB / mW Impedance 38 ohms Weight 340g (without cable) What Reviewers Say

reducing skin effect by preventing the signal from concentrating solely at the surface

Class-H tracking power supply rails for improved efficiency

Astell&Kern HB1 Accessories two corrugated pure aluminum ribbonsThe Astell&Kern HB1 is a portable Bluetooth DAC and amplifier that lets you experience Hi Fi audio and streaming services wirelessly, connecting to your phone or source device via Bluetooth and outputting to any IEM or headphone through its 3. 5mm and 4. 4mm outputs for a clean, cable free upgrade to any listening setup. Type and Technology Portable Bluetooth DAC and amplifier. Bluetooth with aptX HD, aptX, AAC, and SBC codec support. 3. 5mm single