At 300 watts per channel the new McIntosh MC303 Three Channel Power Amplifier with Autoformers is our most powerful multi-channel amplifier offering to date. This powerhouse is also the first ever multi-channel amplifier from McIntosh to include Autoformer coupled output stages. The McIntosh Autoformer, a premium technology found only on the best McIntosh designs, allows each channel of the MC303 to deliver maximum power into 2, 4, or 8 ohm loads resulting in the lowest noise and distortion performance possible. With available peak power of 1200 watts per channel, the MC303 is ready to drive the finest loudspeakers to sound their very best.

Premium cosmetics featuring a ½” thick glass faceplate, custom machined and anodized aluminum handles, and a mirror polished stainless steel chassis are standard equipment on the MC303. Power Guard, a McIntosh circuit innovation, maximizes sound quality at high power levels while our Sentry Monitor feature provides continuous short circuit protection of the amplifier and connected loudspeakers. A triple bank of Peak Reading Watt Meters provides instant recognition of power output and may be switched off for theater use.

• Power outPut: Minimum sine wave continuous average power output per channel, all channels operating: 300 watts into a 2 ohm, 4 ohm or 8 ohm load
• Output Load Impedance: 2, 4 or 8 ohms
• Rated Power Band: 20 Hz to 20,000 Hz
• Total Harmonic Distortion: 0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20 Hz to 20,000 Hz
• Dynamic Headroom: 1.8 dB
• Frequency Response: +0, -0.25 dB from 20 Hz to 20,000 Hz; +0, -3 dB from 10 Hz to 100,000 Hz
• Input Sensitivity (for Rated Output): 1.7 Volt Unbalanced, 3.4 Volt Balanced
• Signal To Noise Ratio (a-weighted): 112 dB below rated output
• Intermodulation Distortion: 0.005% maximum, if the instantaneous peak power output does not exceed twice the rated power output for any combination of frequencies from 20 Hz to 20,000 Hz
• Wide Band Damping Factor: Greater than 40
• Input Impedance: 10,000 ohms
• Power guard: Less than 2% THD with up to 14 dB overdrive at 1,000 Hz
• Power Control Input: 5 VDC - 12 VDC
• Power Control Output: 12 VDC, 25 mA maximum, delay 0.2 seconds
• Power Requirements: 100 Volts, 50/60 Hz at 12 Amps; 110 Volts, 50/60 Hz at 11 Amps; 120 Volts, 50/60 Hz at 10 Amps; 220 Volts, 50/60 Hz at 6 Amps; 230 Volts, 50/60 Hz at 6 Amps; 240 Volts, 50/60 Hz at 6 Amps; Standby: Less than 1 watt; Note: Refer to the rear panel of the MC303 for the correct voltage