p - In a gist, the external USB sound card fires up to 32-bit / 384 k - Hz PCM playback at 130 d - B DNR, and features dual Cirrus Logic CS43198 DACs, our custom-designed, fully balanced Xamp headphone bi-amplifier, and customizable DSP EQ functions./ppbr/pp - On the connectivity ...p - In a gist, the external USB sound card fires up to 32-bit / 384 k - Hz PCM playback at 130 d - B DNR, and features dual Cirrus Logic CS43198 DACs, our custom-designed, fully balanced Xamp headphone bi-amplifier, and customizable DSP EQ functions./ppbr/pp - On the connectivity front, it comes with a USB-A Host port with USB audio that works with USB microphones and headsets, and even wireless Bluetooth transmitters for wire-free audio. This is amongst a plethora of connectivity options such as TOSLINK op