The DX5 DAC & Headphone Amplifier combination offers the power of dual ES9068AS D/A chip processing all in a desktop-scale footprint. With digital conversion taking place within a miniscule 0.00009 THD+N margin this DAC ensures crystal clear sound quality & full MQA decoding through USB (Universal Serial Bus) optical & coaxial inputs bringing you closer to the original recording. The DX5 also supports uncompromising hi-res wireless transmissions from compatible devices supporting a variety of Bluetooth formats including LDAC & APTX.