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Mark Levinson No.523 Dual-Monaural Pre-Amplifier Skip to content

Mark Levinson No.523 Dual-Monaural Pre-Amplifier

Original price $ 16,500.00 - Original price $ 16,500.00
Original price
$ 16,500.00
$ 16,500.00 - $ 16,500.00
Current price $ 16,500.00
SKU MLE523

Mark Levinson No.523 Dual-Monaural Pre-Amplifier

The Mark Levinson № 523 is the definitive preamplifier for the analog music lover. Six line-level analog and phono inputs travel through the Mark Levinson proprietary Pure Path discrete, direct-coupled, fully balanced, dual-monaural signal path for breathtaking purity and performance. With precision control including a discrete, balanced R-2R Ladder volume control, class-A Pure Phono stage, and class-A Main Drive Headphone output, the № 523 preamplifier delivers an uncompromising performance regardless of analog source. Housed in a 6000-series aluminum chassis, like all Mark Levinson equipment, the № 523 is designed and handcrafted in the USA.

Product Highlights:

  • 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 370kHz +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, 30Ω (0.3W), 20 to 20kHz, <0.1% THD >3VRMS
  • Headphone maximum output, low impedance setting, 300Ω, 20Hz to 20kHz, <0.1% THD >9VRMS
  • Headphone THD+N, 20Hz to 20kHz, 2V RMS <0.03% @ 30Ω, <0.01% @ 300Ω
  • 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
  • Dimensions (WxDxH) 17.25” x 18” x 3.75”
  • Weight 39 lbs.
  • Our 30-day money back guarantee

Completing the Signal Path
The № 523 offers five line-level analog inputs: two balanced (XLR), three single-ended (RCA), in addition to the Pure Phono (RCA with grounding pin) input. The preamplifier delivers its signal to balanced (XLR) and single-ended (RCA) stereo outputs, as well as a 1/4-inch (6.3mm) Main Drive Headphone output integrated into the front panel metalwork – a first for Mark Levinson.

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