McIntosh MC1502: 150-Watt Stereo Vacuum Tube Power Amplifier
The McIntosh MC1502 is a high-power stereo vacuum tube amplifier designed for reference-quality two-channel music systems. It delivers 150 watts per channel into 2, 4 or 8 ohms, combining classic McIntosh tube-amplifier character with the control, low noise and speaker compatibility expected from a modern flagship design.
As the direct successor to the limited-edition MC2152, the MC1502 offers the same audio specifications and performance in a more traditional McIntosh design. It can also be viewed as the larger, more powerful sibling to the iconic McIntosh MC275, with twice the stereo output power and an improved 112dB signal-to-noise ratio.
Why Choose the McIntosh MC1502?
- 150 watts x 2 channels: Full rated output is available into 2, 4 or 8-ohm loudspeakers through McIntosh Unity Coupled Circuit output transformers.
- Sixteen vacuum tubes: Eight KT88 output tubes, four 12AX7A tubes and four 12AT7 tubes are divided evenly between the left and right channels.
- Quiet, controlled performance: A 112dB signal-to-noise ratio helps the MC1502 deliver the low background noise and wide dynamic range expected from a modern reference amplifier.
- Built-in protection: Sentry Monitor continuously watches output current and shuts the amplifier down if operating limits are exceeded.
- Premium construction: The tubes and transformers sit on a mirror-polished stainless-steel chassis, protected by a black powder-coated stainless-steel wire cage.
- Flexible connectivity: Balanced and unbalanced inputs, Power Control connections and Solid Cinch speaker binding posts simplify integration into a complete McIntosh system.
Designed for Serious Two-Channel Systems
The MC1502 is well suited to demanding floorstanding speakers, larger listening rooms and listeners who want the dimensional presentation of a tube amplifier without giving up substantial power or bass control. Air-Pipe cooling around the KT88 sockets supports long tube life, while ceramic signal-tube sockets with gold-plated contacts help maintain dependable performance.
Because the amplifier weighs 118 pounds and produces significant heat, it requires a sturdy equipment stand, generous ventilation and adequate clearance above the tube cage. Careful placement should be planned before installation.
McIntosh MC1502 Specifications
| Amplifier Type | 2-channel vacuum tube power amplifier |
|---|---|
| Power Output | 150 watts per channel into 2, 4 or 8 ohms |
| Vacuum Tubes | 8 x KT88, 4 x 12AX7A, 4 x 12AT7 |
| Circuit Configuration | Unity Coupled |
| Total Harmonic Distortion | 0.5% maximum from 250mW to rated power, 20Hz–20kHz; less than 0.20% at 1 watt |
| Signal-to-Noise Ratio | 112dB below rated output |
| Dynamic Headroom | 1.2dB |
| Damping Factor | Greater than 18 |
| Frequency Response | +0/-0.25dB, 20Hz–20kHz; +0/-3dB, 10Hz–70kHz |
| Inputs | Balanced and unbalanced |
| Dimensions | 18-1/4 inches W x 10-1/4 inches H x 21 inches D |
| Weight | 118 lbs; 135 lbs shipping weight |
| Warranty | 3-year limited warranty |
Frequently Asked Questions
Does the MC1502 require a separate preamplifier?
Yes. The MC1502 is a power amplifier and should be connected to a suitable stereo preamplifier through its balanced or unbalanced inputs.
Can the MC1502 power 2-ohm speakers?
Yes. Dedicated 2, 4 and 8-ohm speaker connections allow the Unity Coupled output transformers to deliver the full rated 150 watts per channel to a wide range of loudspeakers.
Can the MC1502 be bridged for mono use?
No. The MC1502 is designed as a two-channel stereo amplifier and does not support mono bridge or mono parallel operation.
How does the MC1502 compare with the MC275?
The MC1502 delivers 150 watts per channel, twice the MC275's 75-watt stereo rating. It is also larger and heavier, and its 112dB signal-to-noise ratio is quieter than a pair of MC275 amplifiers operated for comparable output.
Authorized McIntosh Dealer Support
Audio Exchange is an authorized McIntosh dealer serving Richmond, Virginia and customers throughout the United States. Our team can assist with system matching, speaker compatibility, placement, ventilation and delivery planning. Explore more models in our McIntosh Power Amplifiers collection.
