MC1502
2-Channel Vacuum Tube Amplifier


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The MC1502 Vacuum Tube Amplifier is a stereo amplifier designed for home audio and home music systems that produces 150 Watts per channel. It is the direct replacement to our award winning MC2152 Limited Edition 70th Anniversary Vacuum Tube Amplifier, which was released in celebration of our 70th Anniversary that occurred in 2019. The new MC1502 has identical audio specifications and sound reproduction performance of the heralded MC2152 but in a more customary McIntosh design.

 

Overview

The MC1502 shares the timeless styling of our classic MC275 Vacuum Tube Amplifier. As the MC1502 has twice the stereo power rating of the MC275 (150 Watts vs. 75 Watts) and is physically larger, in many ways it can be considered the MC275's big brother. And while a pair of MC275s can be run in mono to achieve the 150 Watts per channel output of the MC1502, the MC1502 boasts a better signal-to-noise ratio of 112dB vs. 105dB for the MC275 pairing – producing an even quieter performance than the already quiet MC275.

The MC1502 is powered by eight KT88 output vacuum tubes, with four assigned to each stereo channel. It also has eight small signal tubes, consisting of four 12AX7A and four 12AT7 vacuum tubes; two of each of these vacuum tubes are dedicated to each audio channel. The 12AX7A vacuum tubes are for the Balanced and Input amps, while the 12AT7 tubes are for the Voltage and Driver amps. All the vacuum tubes are covered by a 12-gauge stainless steel wire cage with a black powder coated finish.

The KT88 vacuum tube sockets include Air-Pipe cooling at their bases to help facilitate long service life. The eight signal tube sockets have ceramic base construction with gold plated contacts, providing protection from atmospheric contamination. All the vacuum tubes sit atop the precision formed stainless steel chassis polished to a mirror finish. Our Sentry Monitor™ technology monitors the output current and shuts the amplifier off if it ever exceeds safe limits; the signal tubes will flash red if Sentry Monitor is ever activated.


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Technical specifications

ELECTRONIC SPECIFICATIONS

Power Output per Channel
150W @ 2, 4 or 8 Ohms

Number of Channels
2

Total Harmonic Distortion
0.5% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz
(≤ 0.25% harmonic distortion at 1kHz)

S/N below rated output
112dB

Dynamic Headroom
1.2dB

Damping Factor
>18

Rated Power Band
20Hz to 20kHz

Frequency Response
+0, -0.25dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 70,000Hz

GENERAL SPECIFICATIONS

Circuit Configuration
Unity Coupled

Circuit Design
Vacuum Tube

Mono Bridge
No

Mono Parallel
No

Output Type
Unity Coupled Output Transformer

Meters
No

Meter Light Switch
N/A

Balanced Input
2

Front Panel
N/A

Illumination
Small Signal Tubes: Green, Natural

Chassis Style
Polished Stainless Steel

CONTROL

Remote Power Control
Yes

Multi-Channel DB25 Cable
N/A

CONNECTIVITY

Speaker Binding Post Type
Patented Solid Cinch™ Speaker Binding Posts

WEIGHTS & DIMENSIONS

Dimensions (W x H x D)
18-1/4" (46.4cm) x 10-1/4" (26cm) (including feet) x 21" (53.3cm)

Weight
118 lbs (53.5 kg)

Shipping Weight
135 lbs (61.2 kg)