Rolls RA2100b 2-Channel 100 Watts/RMS Channel @ 4 Ohms Power Amplifier The RA2100b FET Stereo 100W / Ch. 25V Mono - 70V Stereo Amp 100 Watts RMS per output (4 Ohm) - 85 Watts RMS per output (8 Ohm) - 200 Watts RMS into 70 Volt (8 Ohm) 1/4" and RCA inputs Fault Protected Output Stage