SPL Phonitor One d, Headphone Amplifier, Powerful headphone amplifier for studio and hi-fi applications, Infinitely adjustable crossfeed function - crosstalk between the two stereo channels for more realistic surround sound, Digital input with 32 bit DA converter, Class Compliant, Support of sampling frequencies up to 768 kHz PCM as well as playback of DSD (DSD4 or DSD256), Pre-amplification by 2 Burr-Brown OPA 2134 SoundPlus operational amplifiers for extremely low noise and minimal distortion, THD + N (0 dBu, 10 Hz - 22 kHz, 600 O): 0.002%, Max. Input level: +22.5 dBu, Noise (A-weighted, 600 O): -97 dBu, Max. Output power (600 O): 2x 190 mW, Max. Output power (250 O): 2x 330 mW, Max. Output power (47 O): 2x 400 mW, Frequency response headphone output (- 3 dB): 10 - 200,000 Hz, Three switchable stereo inputs: 6.3 mm balanced TRS jack, Unbalanced RCA and USB, Headphone output: 6.3 mm stereo jack socket, Dimensions (W x H x D): 210 x 49.6 x 220 mm, Weight: 1.45 kg