Description
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.
Unlike many other amplifiers, the MC1502’s full 150 Watts can be delivered to almost any pair of speakers regardless if they have 2, 4 or 8 Ohm impedance. This is thanks to our patented Unity Coupled Circuit output transformer technology – the same technology McIntosh was founded on in 1949. Two Unity Coupled Circuit output transformers flank the power transformer which is positioned between them. Each transformer is housed in a glass topped extruded enclosure that displays the wiring diagram for each transformer. Two fully spelled out vintage die cast aluminum name badges adorn two sides of the MC1502, while an abbreviated badge is centered between the Tube Lights and Power knobs.
SPECIFICATIONS
ELECTRONIC SPECIFICATIONS
FTC Power Output Rating
150 W
Power Output per Channel
150 W into 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 20kHz
<0.20% at 1W, 20Hz to 20kHz
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 20kHz
+0, -3dB from 10Hz to 70kHz
CONTROL
Remote Power Control
Yes
Multi-Channel DB25 Cable
N/A
CONNECTIVITY
Speaker Binding Post Type
Patented Solid Cinch™ Speaker Binding Posts
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
WEIGHTS & DIMENSIONS
Unit Dimensions (W x H x D)
18-1/4″ (46.4cm) x 10-1/4″ (26cm) (including feet) x 21″ (53.3cm)
Unit Weight
118 lbs (53.5 kg)
Shipping Weight
135 lbs (61.2 kg)
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