Resonessence have just released their next Concero product in the form of a stunning little DSD capable USB headphone amplifier. This new Headphone Amp uses ESS's latest ES9018-2M chip and offers 2 default filters for user preference. More will be added soon. Featuring a 6.3mm output and 3.5 (0db) VRMS and easily capable of driving a pair of Sennheiser HD800 headphones. This little unit is a killer product and offers DSD/DxD playback over USB and can also be used as a USB - S/PDIF bridge.