A best selling headphone amplifier, the Diamond Edition Solo Ultra Linear headphone amplifier has a lower noise floor for improved in-ear monitor listening and a new output stage for better performance with difficult and low impedance headphones, yet it has the clout to drive high impedance headphones too. The Ultra-Linear voltage amplifier stage gives you the smoothness and warmth of a tube amp, yet with all the precision, fine detail, and punchy sound of the solid state amp it is. Plus, it won't wear out like tubes. The Ultra-Linear comes with the PSU 1 Power supply. Specifications: Headphone impedance range: 8 to 2,000 Ohms / 16 to 600 Ohms preferred Power output: (rms, both channels fully driven at 1% THD) 32 Ohms: 140mW/channel; 600 Ohms: 30mW/channel Input sensitivity (for specified power output into 32 Ohms): 511mV rms Input impedance: 37k Ohms at max volume; 50k Ohms at min volume Distortion: (THD plus noise at 9 o'clock volume control setting (qtr power)) 10Hz-20kHz: better than 0.04%; 10Hz-1kHz: better than 0.02% Frequency response (±0,-3dB) 10Hz - 35kHz Output noise: (22Hz-22kHz, quasi-peak/un-weighted) -78dB Channel balance: better than 1dB Crosstalk: Left to Right -56dB; Input to Input -68dB Input selector centre-off position: non-shorting; -38dB at max volume with 2V rms input (ref: 1kHz and 10kHz) Output Stage: Bipolar class AB Supply voltage: 24V DC unipolar Size: (approx.) W: 107 x H: 50 x D: 185 (mm) inc. controls
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