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Power Guard - McIntosh designed and patented circuit that prevents speaker clipping. Photo-optics react in 1/1000th of a second to regulate power levels to speaker, protecting the speakers and the amplifier. A waveform comparison circuit continuously monitors both input and output signals. Power Guard dynamically adjusts the input level to avoid clipping while preventing harsh sounding distortion.
Output Autoformer - Unique McIntosh technology delivers the full rated amplifier output with the least possible distortion into loudspeaker impedances of 2, 4, or 8 Ohms; you get all the power you paid for and the freedom to choose any loudspeaker.

Output Per Channel	150W
Number of Channels	2
Speaker Impedance	2 or 4 or 8 Ohms
Rated Power Band	20Hz - 20kHz
Total Harmonic Distortion	0.005%
Dynamic Headroom	2.0dB
Frequency Response	+0, -0.25dB from 20Hz to 20kHz +0, -3.0dB from 10Hz to 100kHz
Damping Factor	>40 Wideband
Dimensions (WxHxD)	17 1/2" (44.45cm) x 6" (15.24cm) x 21" (50.8cm) - including front panel, and cables
Weight	75lbs (34kg)

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