Preamp and DAC Features Latest generation ESS Sabre32 Reference DAC (ES9018K2M) Asynchronous USB 2.0 supports PCM up to 384kHz/32-bit USB input decodes Native DSD64, DSD128, DSD256 and DoP DSD Windows USB drivers for ASIO & WASAPI - Download here Mac OS does not require any drivers Coax and optical accept PCM up to 192kHz/24-bit Analog bass management with high & low pass crossovers Home theater bypass input for surround sound integration Front panel subwoofer level control Dedicated high current headphone amplifier (TI TPA6120) Phono for MM & MC with 100 or 47k load Front panel Aux input with automatic +12 dB gain stage 5 pairs RCA line level Analog inputs 1 pair XLR balanced Analog input Balanced XLR and RCA left and right preamp outputs 1 balanced XLR and 2 RCA subwoofer outputs Bass & treble controls with relay bypass from remote or front panel Rear panel IR input and IR loop output jacks 12 Volt input and output to triggers Back-lit remote control with discrete buttons 0.5w standby power consumption meets Energy Star & EU specs Power Amp Features 160 Watts x 2 @ 8 Ohms (RMS, both channels driven) 240 Watts x 2 @ 4 Ohms (RMS, both channels driven) Power amp circuit topology designed by legendary John Curl Direct amplifier input to bypass preamp section High bias class A/AB operation Oversized shielded toroid power transformer Dual-mono power supply and power amplifier 40,000uF power supply filter capacitance Matched JFET input stages and MOSFET driver stages 12 high voltage/high current bipolar output transistors Heavy-duty 24k gold-plated 5-way speaker binding posts Over temp and short circuit relay protection Power Output - Both channels driven (0.05% THD, RMS, 20 Hz - 20 kHz) 160 watts x 2 @ 8 240 watts x 2 @ 4 Power Output - Both channels driven (0.9% THD, RMS, 20 Hz - 20 kHz) 180 watts x 2 @ 8 270 watts x 2 @ 4 Current Capacity 45 amps peak per channel Frequency Response 10 Hz - 100 kHz, +0/-3 dB Total Harmonic Distortion (THD) 50 dB at 20 kHz > 70 dB at 1 kHz Signal to Noise Ratio - IHF A-weighted Line in: - 103 dB (input shorted) Digital in: - 106 dB Amplifier Damping Factor > 800 at 20 Hz Preamp Stage Input Sensitivity 300 mV in for 1 V at Pre Out jacks Total Preamp Stage Gain: 10 dB Max Output Unbalanced: 7 V Max Output Balanced: 9 V Power Amplifier Stage Sensitivity 1 V at Bypass/Amp In for 28 V at Speaker Out Total Amp Stage Gain: 28 dB Phono Stage Sensitivity / Input Impedance MM: 35 dB / 47 k MC: 52 dB / 47 k or 100 High & Low Pass Crossover Slopes 12 dB per octave Supported DAC Sampling Rates USB: up to 384 kHz / 32-bit PCM DSD Native: DSD 64, DSD 128, DSD 256 DSD over PCM (DoP) at 384 kHz Coax/Opt: up to 192 kHz / 24-bit PCM Digital to Analog Converter ESS Sabre32 Reference ES9018K2M 384 kHz / 32-bit USB 2.0 Controller VIA VT1731, 384 kHz / 32-bit Headphone Amplifier Texas Instruments TPA6120A Output Impedance 10 ohms XLR Pin Identification 1 = Ground (Shield) 2 = Positive 3 = Negative (Return) Input Impedance Unbalanced: 24 k Balanced: 100 k per leg Output Impedance Unbalanced: 100 Balanced: 470 per leg Dimensions Width: 17-1/4" (437 mm) Depth: 16-1/4" (413 mm) Depth, with cables 17-1/4" (437 mm) Height, with feet: 5-7/8" (150 mm) Height, without feet: 5-1/4" (133 mm), 3U Net Weight 33 lb. (15 kg) Shipping Weight 45 lb. (20.4 kg) Power Requirement Standby: 0.5 watts Idling power: 70 watts Maximum: 750 watts 110-125 VAC 60 Hz or 220-250 VAC 50 Hz AC mains voltage is set on rear