Mark Levinson No 523

Line Stage Gain, Normal Gain Setting: 13.5dB balanced; 7.5dB single-ended
Line Stage Frequency Response, 20Hz to 20KHz: ±0.02dB
Line Stage Frequency Response, 0.4Hz to 370Hz: +0.1 / -3dB
THD+N @ 1KHz (2VRMS Single-Ended or 4VRMS Balanced Output): <0.003%
Signal-to-Noise Ratio (REF. To 2VRMS Single-Ended or 4VRMS Balanced, Max Vol.): >115dB @ 1kHz
Crosstalk @ 1KHz: <-107dB
Channel Separation: Below Noise Floor (>115dB @ 1KHz)
Input Impedance: >45kΩ
Output Impedance: <80Ω single ended, <160Ω balanced
Maximum Input Level, Normal Gain Setting: >10VRMS, single ended, >15VRMS, balanced
Maximum Output Level: >11VRMS single ended, >22VRMS balanced
Headphone Output Impedance: selectable; <3Ω or 75Ω
Headphone Maximum Output, Low Impedance Setting, 300Ω, 20Hz TO 20KHz, <0.1% THD
Headphone THD+N, 20Hz TO 20KHz, 2V RMS: <0.03% @ 30Ω, <0.01% @ 300Ω
RIAA Frequency Response: 20Hz to 20kHz, ±0.3dB
Infrasonic Filter: Defeatable, 15Hz, 2nd order (12dB/octave)
Moving Magnet Mode, Input Resistance: 47 47kΩ
Moving Magnet Mode, Input Capacitance: Selectable; 50, 100, 150, 200, or 680pF
Moving Magnet Mode, Gain: 40dB @ 1kHz
Moving Magnet Mode, THD+N, 20Hz to 20KHz, 2VRMS Output: <0.03%
Moving Coil Mode, Input Resistance: selectable; 20, 33, 50, 66, 100, 200, 330, 500, 1000, or 47kΩ
Moving Coil Mode, Input Capacitance: 50pF
Moving Coil Mode, Gain: Selectable; 50, 60, or 70dB @ 1kHz
Moving Coil Mode, THD+N, 20Hz to 20KHz, 2VRMS Output: <0.02%, 50 or 60dB settings, <0.04, 70db setting
Analog Inputs: 2 balanced (XLR), 3 single-ended (RCA) line, 1 single-ended (RCA) phono w/ ground
Analog Outputs: 1 balanced (XLR); 1 pair single-ended (RCA), 1 headphone (¼”, 6.3mm TS)
Control Connectors: Ethernet (RJ45), RS-232 (RJ12), Trigger In and Out, IR In, USB-A, Mini USB
Mains Voltage: 100VAC, 115VAC, or 230VAC, factory set
Power Consumption: 0.4W Green Standby, 5W Power Save, 67W Normal Standby, 70W On, idle
Height: 3.75” (10.2cm) (without feet)
Net weight: 39 lbs (17.7kg)