A sampling rate of up to 384 kHz and a 32-bit sampling depth are supported by the XXL DAC Ultra headphone amplifier from Oehlbach via USB. The housing is equipped with premium quality Burr Brown digital/analogue converters for absolute signal purity and optimum acoustic performance. Whether it´s used for sophisticated over-ear or compact in-ear headphones, the XXL DAC Ultra is the perfect partner for the connected headphones. In addition to the USB connection there is also an optical and coaxial digital input as well as analogue RCA inputs. Playback is reproduced via two 6.3 mm jack outputs as well as RCA outputs.