Mark Levinson No.431 power amplifier Specifications

Sidebar 1: Specifications

Description: Solid-state dual-mono power amplifier. Speaker connections: four Madrigal-designed speaker binding posts. Input connections: two 3-pin XLRs, balanced; two RCAs, unbalanced. Other connectors; two 1/8" mini-jacks for remote turn-on; one RS-232 port on RJ-11; two Mark Levinson communication ports on RJ-45. Output power: 200Wpc into 8 ohms (23dBW), 400Wpc into 4 ohms (23dBW), 20Hz–20kHz, <0.5% THD (FTC); not rated into 2 ohms or for bridged operation. Frequency response: 20Hz–20kHz, ±0.5dB. Input sensitivity: 130mV for 2.83V output, 1.82V input for full output. Output impedance: <0.02 ohm, 20Hz–20kHz. Signal/noise ratio (main outputs): >65dB (ref. 2.83V). Damping factor: >400, 20Hz–20kHz into 8 ohms. Power consumption: 175W (On), 100W (Standby), 15W (Sleep). Current draw at rated output at 120V: 8.5A (350W into 8 ohms), 14.6A (700W into 4 ohms).
Dimensions: 17.75" (451mm) W by 7.65" (194mm) H by 20" (513mm) D. Weight: 95 lbs (43kg) net, 105 lbs (47.7kg) shipping.
Serial numbers of units reviewed: 1213, 1239.
Price: $6000. Approximate number of dealers: 90.
Manufacturer: Mark Levinson, 3 Oak Park, Bedford, MA 01730-1413. Tel: (781) 280-0300. Fax: (781) 280-0495. Web:

Mark Levinson
3 Oak Park
Bedford, MA 01730-1413
(781) 280-0300