• Reliable, high-power in four different channel configurations provide ideal solutions for any system
  • Ethernet and 12V trigger control capability for system integration
  • Isolated chassis and signal grounds minimize noise, optimizing detail, even at low listening levels
  • Fully-differential circuitry with both balanced XLR and single-ended RCA inputs

Awards & Accolades

  • 2015

    Mark Levinson No326S and No532H 5 Star Award

    What HiFi

  • 2011

    "Best of" Award


  • 2011

    Review by Andrew Robinson


  • 2011

    Review by Larry Greenhill


  • 2011

    ADEX Award for No500H Series Amplifiers

    Design Journal

  • 2011

    High End Audio Product of the Year

    Stuff Magazine (Vietnam)


The Nº531H and Nº532H are both true mono-block designs with independent power supplies for each channel and are rated at 300W per channel into 8 ohms. The transformers and power supply designs deliver unsurpassed dynamics and transient responses for today’s demanding audio formats and provide stability with even the most difficult to drive loudspeakers. Fully differential circuitry ensures that balanced input signals stay that way throughout the signal path and traditional Mark Levinson “Hurricane” binding posts offer secure termination to the loudspeaker.

The four amplifiers in the No500H Series are the definition of truly outstanding performance in their respective categories. Drawing from the Mark Levinson heritage, while utilizing a new, straightforward, balanced, current-feedback design creates a new series of amplifiers that must be listened to in order to be fully appreciated. The final result is impressive even for the Mark Levinson high standard of excellence.

Frequency Response

within 0.5dB from 10Hz to 20kHz

Input Impedance

60 kΩ (balanced); 30 kΩ (unbalanced)

Input Sensitivity

2.83Vrms output at 130mVrms input


(with feet): 7.65" (19.4cm); (without feet): 6.97" (17.7cm)


17.75" (45.1cm)


19.83" (50.4cm)


Net Weight: 74.0 lbs (33.6kg); Shipping weight: 84.0 lbs (38.1kg)


one balanced XLR input per channel; one unbalanced RCA input per channel

Rated Output Power into 8 ohms

300W/ch (20Hz to 20kHz at

Signal-to-Noise Ratio

>85dB, reference level: 2.83 Vrms



Power Requirements

100V~, 120V~, 230V~, factory set for destination country;

Speaker Connections

one pair “Hurricane” loudspeaker outputs with banana-plug sockets per channel (banana-plug socket not available on the 230 VAC models&#41