McIntosh MC501 monoblock power amplifier Specifications

Sidebar 1: Specifications

Description: Solid-state monoblock power amplifier with balanced (XLR) and single-ended (RCA) inputs and "Autoformer"-coupled output stage. Minimum sinewave continuous average power output: 500W into 8, 4, or 2 ohms (27dBW, 24dBW, 21dBW, respectively). Rated power bandwidth: 20Hz-20kHz. THD: 0.005% into 8, 4, or 2 ohms, 250mW to rated power output. IMD: 0.005% maximum if instantaneous peak output does not exceed twice the rated output for any combination of frequencies, 20Hz-20kHz, into 8, 4, or 2 ohms. Dynamic headroom: 1.8dB. Wideband damping factor: 100 at 8 ohms (equivalent to a source impedance of 0.08 ohms) Frequency responses: 20Hz-20kHz, +0/-0.25dB; 10Hz-100kHz, +0/-3dB. Sensitivity: 2.1V unbalanced input, 4.2V balanced input. Signal/noise ratio: 97dB, A-weighted (124dB below rated output), unbalanced and balanced. Input impedance: 10k ohms unbalanced, 20k ohms balanced.
Dimensions: 17.5" W by 9.5" H (including feet) by 14 7/8" D (including front-panel knobs). Weight: 91.5 lbs (41.6kg) net, 105.5 lbs (48kg) shipping.
Serial numbers of units reviewed: UM 1332, UM 1328.
Price: $8200/pair. Approximate number of dealers: 240.
Manufacturer: McIntosh Laboratory, Inc., 2 Chambers Street, Binghamton, NY 13903-2699. Tel: (607) 723-3512. Fax: (607) 724-0549. Web:

2 Chambers Street
Binghamton, NY 13903-2699
(607) 723-3512