Pair of McIntosh MC-501 monoblock amps for sale. Includes original cartons, power cords, and owners manuals. Both work properly, sound great, and have typical distortion free, warm McIntosh sound. These will drive any speaker. Each unit has 1 or 2 small marks and scratches as shown in images, 7.5-8/10 overall good condition. These are part of my living room system. From a pet and smoke free home. Local pickup offered. The amps are currently boxed. NO TRADES. LOCAL PICKUP ONLY. NO SHIPPING!!! IF YOU ARE CONTACTING ME TO CONSIDER SOMETHING OUTSIDE THE SCOPE OF AN ORDINARY BUSINESS TRANSACTION THE ANSWER IS NO. Specifications, courtesy of McIntosh: FREQUENCY RESPONSE +0, -0.25dB from 20Hz to 20kHz +0, -3dB from 10Hz to 100kHz TOTAL HARMONIC DISTORTION 0.005% maximum at any level from 250mW to rated power output. INTERMODULATION DISTORTION SMPTE 0.005% maximum if instantaneous peak output does not exceed twice the output rating. A-WEIGHTED SIGNAL-TO-NOISE RATIO Unbalanced and Balanced: 97dB (124dB below rated output) RMS POWER OUTPUT 500W minimum sine wave continuous average power output from 20Hz to 20kHz. INPUT IMPEDANCE 10,000 Ohms (unbalanced) 20,000 Ohms (balanced) INPUT SENSITIVITY 2.1 Volts unbalanced, 4.2 Volts balanced WIDE BAND DAMPING FACTOR 100 @ 8-Ohms DYNAMIC HEADROOM 1.8dB RATED POWER BAND 20Hz to 20kHz POWER GUARD® Clipping is prevented and THD does not exceed 2% with up to 14dB overdrive at 1kHz. POWER REQUIREMENTS 120V 50/60Hz, 6.6A OVERALL DIMENSIONS (H x W x D) 9-7/16” (22.86cm) x 17-1/2” (44.45cm) x 14-13/16” (37.62cm) including front panel and knobs. WEIGHT 91.5 lbs. (41.6 kg) net 105.5 lbs. (48 kg) boxed ADDITIONAL SPECIFICATION DC Failure Protection Thermal Sensors Turn-on Delay Soft Start Inrush Protection Balanced and Unbalanced Inputs Remote Power Control Massive Gold Plated Output Binding Posts Stainless Steel Chassis w/ Super Mirror Finish