xDuoo XD-05 Bal is a true portable hi-fi balanced DAC & headphone amplifier from the house of xDuoo. It is fully balanced from digital to an analogue circuit which eliminates the noise interference and crosstalk caused by shared ground wires which as result greatly improves the sound separation and reduces background noise and provides black background. It supports DSD format, sampling rate up to DSD512, supports PCM/DXD format, and sampling rate up to 32bit/768kHz.It can be connected to the USB interface of a computer, mobile phone, tablet or HiFi player, and supports up to PCM 32bit/768kHz, DSD512. It also supports AES Balanced Digital Signal Input which is all balance from digital to analogue balanced output allowing a new and eye-opening experience.It supports HD Coaxial and Optical input which can be connected to any digital outs of any sound equipment. It has integrated Bluetooth which can be connected to any Bluetooth device out there.A user can change the OP-Amps based on the sound signature they would love to listen to.