Ampli finale a valvole

Power output: 25 watts per channel into 8Ω (stereo), 50 watts into 8Ω (mono)
Frequency response: 18Hz to 30kHz
Total harmonic distortion: 0.5%
Input sensitivity: 0.5V
Signal to noise ratio: 90dB
Speaker load impedance: 4Ω to 16Ω
Valve complement: 1 x 12AX7, 2 x 12AU7, 2 x 12BH7, 4 x 7591
Dimensions: 14-1/2 x 9-1/8 x 7 inches
Weight: 34lbs
Finish: chrome and blac

http://berners.ch/McIntosh/it/MC225.htm

https://www.hifiengine.com/manual_library/mcintosh/mc225.shtml