McIntosh MC2505

Name: Mcintosh MC2505
Brand: Mcintosh

A solid-state stereo power amplifier delivering 50 watts per channel with precise frequency response.

Overview

The McIntosh MC2505 is a two-channel solid-state power amplifier. It was produced from 1967 to 1977. It has the brand’s signature blue watt meters and autoformers, which keep power delivery stable across varying speaker loads. It was designed for high-fidelity audio with reliability, and it's a sought-after model among vintage audio enthusiasts.

Specifications

Power output	50 watts per channel
Frequency response	20 Hz to 20 kHz (+0, -0.25 dB)
Total harmonic distortion	0.25%
Input sensitivity	0.5V
Signal to noise ratio	90dB
Speaker load impedance	4 ohm, 8 ohm, 16 ohm
Connections	Barrier binding posts for speaker connections
Dimensions	16"W x 5.4"H x 13"D (406 x 138 x 381 mm)
Weight	38 lbs (11.34 kg)
Included	Autoformers

Design

The MC2505 is a solid-state design with shadow box meters and distinctive blue watt meters, in McIntosh’s mid-century amplifier styling. The autoformers keep performance consistent across different speaker impedances.

Market

The MC2505 was originally priced at $549. In restored condition it now goes for around $2,350. Common issues are darkened meters and degraded electrolytic capacitors, and both are often dealt with during restoration.