Second owner, the unit is in like new condition. Non Smoking household from both owners. I've owned it for a year. Original owner purchased about 2 years ago. Very capable DAC with built in head amp. If you can pair it with an external amp, you'll get the most out of it. https://metrumacoustics.com/product/amethyst-by-metrum-acoustics/ Weight 2.5 kg Dimensions 25 x 19 x 6 cm Voltage & Color 110V Black Line Specifications 24 bits Non oversampling DAC Forward (FPGA) corrected 1 DAC per channel in differential mode 30 VA with toroidal transformer 110/115V AC 220/230V AC 60/50Hz Input 1x optical, 2x coaxial and USB Output : 2 Volt RMS Volume controlled headphone connection Max load 16 Ohms Frequency Response 44.1 kHz sampling 1Hz – 20 khz -1dB Frequency response 192 kHz sampling 1Hz – 65 kHz -1dB Distortion 0.006 THD Noise Floor -145 DB related 2 volt rms Output impedance RCA 100 Ohm. Headphone output 3 Ohms Sampling rate Optical 44.1 – 96 kHz Sampling rate Coax 44.1 -192 kHz, Sampling rate USB 44.1 kHz -384 kHz Dimensions 19 x 6 x 25 cm Weight 2.5KG $700 + Free shipping to U.S.