Vintage McIntosh MC2505 // Solid-State Amplifier

The McIntosh MC 2505 has the signature vintage warm and sweet sound you would expect from Mac. With 50W per channel, it has plenty of power for your high efficiency speakers. This clean example was recently serviced here in our shop, and working and running as it should throughout. This is the later variant, MC 2505-2, with flush power meters  The front glass faceplate has a bit of typical separation near the headphone jack and gain knob, but these fade away at a listening distance, as you're immersed in the sweet, smooth sound.

RESTORATIONS

• Full 30-point service check
• Deoxidized and cleaned the pots
• Cleaned controls, switches, and chassis

SPECS

Type   Solid-state stereo power amplifier

Power output   50 watts per channel into 8Ω (stereo)

Frequency response   20Hz to 20kHz

Total harmonic distortion   0.25%

Damping factor   10

Input sensitivity   0.5V

Signal to noise ratio   90dB

Speaker load impedance   4Ω to 16Ω

Dimensions   16"W x 5.4"H x 13"D

Weight   38 lbs.

LINER NOTES

The McIntosh MC2505 is a solid state power amplifier with a maximum power output of 100 watts RMS continuous, 50 watts per channel operating simultaneously, into 4 ohm, 8 ohm, or 16 ohm loads. Harmonic distortion is less than 0.25% at rated power output from 20Hz to 20,000Hz. Frequency range at rated output both channels; +0, 0.025dB, 20Hz through 20,000Hz. At around serial number 36K00, the model designation was changed to 2502-2, and can be visually identified by flush meters, and a gain knob that runs clockwise from -20dB to 0.