Preamp and DAC FeaturesLatest generation ESS Sabre32 Reference DAC (ES9018K2M)Asynchronous USB 2.0 supports PCM up to 384kHz/32-bitUSB input decodes Native DSD64, DSD128, DSD256 and DoP DSDWindows USB drivers for ASIO & WASAPI - Download hereMac OS does not require any driversCoax and optical accept PCM up to 192kHz/24-bitAnalog bass management with high & low pass crossoversHome theater bypass input for surround sound integrationFront panel subwoofer level controlDedicated high current headphone amplifier (TI TPA6120)Phono for MM & MC with 100 or 47k loadFront panel Aux input with automatic +12 dB gain stage5 pairs RCA line level Analog inputs1 pair XLR balanced Analog inputBalanced XLR and RCA left and right preamp outputs1 balanced XLR and 2 RCA subwoofer outputsBass & treble controls with relay bypass from remote or front panelRear panel IR input and IR loop output jacks12 Volt input and output to triggersBack-lit remote control with discrete buttons0.5w standby power consumption meets Energy Star & EU specsPower Amp Features160 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 CurlDirect amplifier input to bypass preamp sectionHigh bias class A/AB operationOversized shielded toroid power transformerDual-mono power supply and power amplifier40,000uF power supply filter capacitanceMatched JFET input stages and MOSFET driver stages12 high voltage/high current bipolar output transistorsHeavy-duty 24k gold-plated 5-way speaker binding postsOver temp and short circuit relay protectionPower 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