McIntosh MC3500  1-Channel Vacuum Tube Amplifier Mk II
McIntosh MC3500  1-Channel Vacuum Tube Amplifier Mk II McIntosh MC3500  1-Channel Vacuum Tube Amplifier Mk II McIntosh MC3500  1-Channel Vacuum Tube Amplifier Mk II

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The McIntosh MC3500 1-Channel Vacuum Tube Amplifier Mk II is a historic and significant piece of audio equipment. With its use at the 1969 Woodstock Music and Art Fair, it's been praised for its outstanding sound quality. This amplifier has gone on to power many other influential music events, making it a reliable and trusted choice for the experts in the industry.

  • Sentry Monitor - McIntosh designed and patented circuit that activates in case of accidental “shorts" in speaker wires. Fuse-less short-circuit protection circuit disengages the output stage before current exceeds safe operating level-resets automatically.
Output Per Channel 350W
Number of Channels 1
Speaker Impedance 2 or 4 or 8 Ohms
Rated Power Band 20Hz - 20kHz
Total Harmonic Distortion 0.3% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz - 20kHz (≤0.20% at 1kHz)
Dynamic Headroom 2.4dB
Frequency Response
  • +0, -0.5dB from 20Hz to 20kHz
  • +0, -3.0dB from 10Hz to 100kHz
Damping Factor >25 Wideband
Dimensions (WxHxD) 18" (45.7cm) x 11 13/16" (30cm) x 21 5/8" (54.9cm)
Weight 121lbs (54.9kg)