Rotel RMB 1506 Power amplifier

50 watts per channel into 8 ohms (20-20,000 Hz) at 0.03% THD with all channels driven
80 watts per channel into 4 ohms
Class AB design
custom made toroidal transformer for stable, noise-free performance
frequency response: 10-100,000 Hz (±1dB)
signal-to-noise ratio: 115 dB
thermal and overcurrent protection circuitry
detachable power cord
rack mounting ears included