No Products in the Cart
Inspired by the amplifier that inspired a generation.
There's no denying the historic significance of the 1969 Woodstock Music and Art Fair. There had never been anything like it, and many would argue there's not been anything like it since. With an unexpected crowd of over 400,000 people, there was a lot that could have gone wrong – and some things did. But one aspect that's nearly universally agreed upon was how great all the musicians sounded. That sound quality is thanks in part to the McIntosh MC3500 Vacuum Tube Amplifiers that exclusively powered the sound system used at Woodstock.1 The MC3500 would go on to power many other influential music events.
A new MC3500 Mk II (left) with an original MC3500.
| It was at a 2019 event to celebrate the 50th Anniversary of Woodstock where McIntosh President Charlie Randall, realizing the historical importance of the MC3500, first dreamed of bringing it back into production. That proved no easy task considering it was first designed over 50 years ago. But after more than two years of development, that dream has become reality as McIntosh is proud to announce the MC3500 Vacuum Tube Amplifier Mk II. |
One of the original McIntosh MC3500 amplifiers that was used at Woodstock displayed at the Bethel Woods Center for the Arts. |
The home audio stereo system comprised of the C12000 and MC3500 Mk II "simply sounds natural. Listen to it and you'll discover that you are listening to music — pure, simple, unadulterated music. It's not 'bright' or 'hard' or 'soft' or 'warm' or 'euphonic'… it’s just as you'd expect music to sound: natural." Named Stereo Preamplifier and Power Amplifier of the Year 2023. - Australian Hi-Fi Magazine
The MC3500 Vacuum Tube Amplifier Mk II is a conservatively rated 350 Watt monoblock that takes its inspiration from the original 1968-71 MC3500 and incorporates everything we have learned about vacuum tube amplifier design since the 1960s. It has been upgraded to modern standards and with modern components to deliver an audio performance worthy of its predecessor and the legacy of their shared model number – all while adhering to the original design as much as possible. Like the original MC3500, the MC3500 Mk II uses our Unity Coupled Circuit output transformer, which allows the full 350 Watts to be safely delivered to virtually any speaker regardless if it has 2, 4 or 8-Ohm impedance.
The MC3500 Mk II is powered by eight EL509S high-power output vacuum tubes. The EL509S tube was chosen specifically due to it having many similar qualities and characteristics of the 6LQ6 "sweep tubes" used on the original MC3500. Like the 6LQ6, the EL509S is very rugged thanks to its robust cathode and associated heating element which produces a high peak plate current capability in excess of 1 Amp.
| Electronic Specifications | |
| FTC Power Output Rating | 350 W |
| Power Output per Channel | 350 W into 2, 4 or 8 ohms |
| Number of Channels | 1 |
| Total Harmonic Distortion | 0.3% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20kHz <0.20% at 1W, 20Hz to 20kHz |
| S/N below rated output | 120dB |
| Dynamic Headroom | 2.4dB |
| Damping Factor | >25 Wideband |
| Rated Power Band | 20Hz to 20kHz |
| Frequency Response | +0, -0.5dB from 20Hz to 20kHz +0, -3.0dB from 10Hz to 70kHz |
| Control | |
| Remote Power Control | Yes |
| Multi-Channel DB25 Cable | N/A |
| General Specifications | |
| Circuit Configuration | Unity Coupled |
| Circuit Design | Vacuum Tube |
| Mono Bridge | No |
| Mono Parallel | No |
| Output Type | Unity Coupled Output Transformer |
| Meters | Yes |
| Meter Light Switch | Yes |
| Balanced Input | Yes |
| Front Panel | Machined aluminum with handles |
| Illumination | Direct LED |
| Chassis Style | Polished stainless steel |
| Connectivity | |
| Speaker Binding Post Type | Patented Solid Cinch™ Speaker Binding Posts |
| Weights & Dimensions | |
| Unit Dimensions (W x H x D) | 18" (45.7cm) x 11-13/16" (30cm) x 21-5/8" (54.9cm) |
| Unit Weight | 121 lbs (54.9 kg) |
| Shipping Weight | 147 lbs (66.7 kg) |
