[Dual DAC Chips & Precise FPGA Chip:AP80 PRO-X boasts dual ESS9219C DAC chips for exceptional dynamic range and minimal distortion. With a robust +130 dB SNR +121 dB DNR and -114 dB THD+N it delivers up to 2.0 Vrms output with analog gain control reducing noise at any volume. Plus its built-in FPGA chip HBC3000 ensures native DSD 64/128/256 support enhancing digital music accuracy Supports MQA 8X and Various Lossless Transmission Protocols:Hidizs AP80 PRO-X portable music player uses MQA technology for final unfold (8X) of an MQA file. And it supports Bidirectional Bluetooth 4.2 and CSR APT-X. It can be a Bluetooth audio source and double as a professional Bluetooth DAC AMP "Multi-functional:AP80 PRO-X doubles as a step counter and e-book reader. When paired with a DAC AMP it transforms into a digital audio player (DAP) ensuring top-notch sound quality. Its also a powerful external DAC AMP boosting audio quality when connected to your phone or PC. Compatible with mac OS 10.7 iPad OS Windows XP Windows 7/8/10 or newer" "Unique Design:Crafted from a single aluminum body using advanced CNC tech AP80 PRO-X features an X-shaped design with angular diamond surfaces housing a Japanese ALPS volume wheel. With 3.5 mm and 2.5 mm outputs its compact yet versatile catering to your needs without bulk" Long Standby Time and Hi-Res Audio Certified:AP80 PRO-X has a standby time of up to 40 days. Sustainable use time: PO: 8-11 hours BAL: 6-8 hours. The battery life is enough to meet your needs for a day. AP80 PRO-X is certified by Hi-Res Audio & Hi-Res Audio Wireless. This ensures that you can enjoy high-quality music]