Rotel RMB 1555 Power amplifier

120 watts per channel into 8 ohms (20-20,000 Hz) at 0.03% THD with all channels driven
4-ohm stable for use with a wide range of speakers
Class AB design
custom made toroidal transformer for stable, noise-free performance
high-quality, British-made capacitors
frequency response: 10-100,000 Hz (+0.5/-3dB)
signal-to-noise ratio: 116 dB
thermal and overcurrent protection circuitry
rack mounting ears included