The 4 channel, Power Series amplifier offers high fidelity in a full-range configuration with 400 Watts of power and features a versatile design that can be used in either 2 or 4 channel configurations |RMS Power Output 60 Watts x 4 at 4 Ohm or 100 Watts x 4 at 2 Ohm or 200 Watts x 2 at 4 Ohm Bridged or 2 Ohm x 2 Bridged Stable.| Class A|B amplifier offers the perfect balance of power output and compact design |2.14in. x 8.14in. x 13.66in.) required for high performance audio systems.