McIntosh MC250 // Vintage / Solid-State Stereo Amplifier / 50wpc

The McIntosh MC250 is what happens when McIntosh decides to dip its toes into the solid-state world but refuses to abandon that legendary tube-like magic. Released in 1967, this 50-watt-per-channel beast was McIntosh’s first solid-state power amp, but instead of sounding sterile and lifeless like a lot of early transistor amps, the MC250 kept things warm, smooth, and musical.

This isn’t just an amplifier—it’s a vintage masterpiece that still embarrasses plenty of modern gear.

S/N: 54L69

• Replaced one output transistor
• Replaced a few electrolytic capacitors and resistors
• Cleaned control contacts
• Inspected boards for bad connections and resoldered
• Replaced gain knobs
• Verified unit meets mfg specs for power and distortion specs: 50 Watts RMS per channel @ 0.25% THD

Power output: 50 watts per channel into 8Ω (stereo), 100 watts into 8Ω (mono)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.25%

Damping factor: 38

Input sensitivity: 0.5V

Signal to noise ratio: 90dB

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 24 x silicon transistors, 18 x diodes

Dimensions: 7-1/16"H, 10-5/8"W and 15-5/8"D

Weight: 35 lbs