- Nutube Vacuum Tube: Uses a Korg Nutube 6P1 dual triode on an anti-vibration suspension as the voltage-gain stage of a pocketable DAC and amplifier. - Dual-Mono AKM Decoding: Two AK4493SEQ DAC chips run in mono mode, one per channel, driven by a 16-core XMOS XU316 USB interface. - Three Selectable Timbres: Classic uses local negative feedback for a warmer tone, Modern applies global feedback for lower distortion, and Solid-State switches to an op-amp path for neutral tonality. - High-Resolution Format Support: USB input handles PCM up to 32-bit/768kHz and native DSD512; the 3.5mm port doubles as S/PDIF in and out at up to 24-bit/192kHz. - Flexible Outputs: Both the 3.5mm and 4.4mm jacks switch between headphone output and line output for feeding external amplifiers or active speakers. - Multiple Power Modes: An internal 2000mAh battery gives around 4.7 hours of use, with USB pass-through power and external DC operation also supported. - Wireless Input: Bluetooth 5.1 reception with LDAC and aptX HD/LL allows use without a wired host. - Specifications: Approximately 310mW single-ended and 620mW balanced, up to around 1000mW at 32Ω in Hyper Mode | 0.96 inch colour display | 100 x 70 x 15mm | around 150g.
