Mark Levinson No. 531H | 300W Mono-Block Amplifier - OnWard PH

Welcome to On.Ward PH! We sell authentic gadgets for WFH, Gaming, Distance Learning, Content Creation, and Sports!


  • A true mono-block design with independent power supplies per channel; the No531H is a monaural amplifier that is rated at 300W per channel at 8ohms.
  • 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

    Communication and Control
    One Ethernet 10Base-T port; one 3.5mm mono (tip/sleeve) mini plug trigger input, 3-12Vdc; one 3.5mm mono (tip/sleeve) mini plug trigger output, 3-12Vdc; 3-pin IEC standard power connector

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

    Rated Output Power Into 8 Ohms

    300W/ch (20Hz to 20kHz at Gain 26.8dB

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