Twin Wolfson WM8740 24bit DACs used in dual differential configuration. New Anagram Technologies ATF2TM 24-bit/384kHz audio up-sampling / jitter reduction. * Optional Digital Preamp mode allowing connection directly to power amp or active speakers. 24-bit/96kHz driverless USB Audio 1.0. * 24-bit/192kHz USB Audio 2.0 with ASIO or kernel streaming modes. 24-bit/192kHz USB Audio 2.0 with ASIO or kernel streaming modes. Asynchronous USB transfer for very low jitter. * Selectable digital filters - linear phase, minimum phase and steep. Balanced XLR audio output and RCA phono output. Two 24 bit digital inputs (with optical or coaxial for each). * External input for optional BT100 Bluetooth receiver - allows audio to be streamed and up-sampled from any paired Bluetooth device. Supports high quality apt-X Bluetooth CODEC as well as standard SBC Bluetooth CODEC.