THX Ultra2 certified 
150 watts x 2 into 8 Ω (all channels driven)
225 watts x 2 into 4 Ω or 2 Ω (all channels driven)
400 watts x 1 bridged into 8 Ω or 4 Ω
35 amps peak current per channel
2 Ohm stable operation with load selector switch
Two pairs of speaker outputs with front panel A/B buttons
Rear-mounted lockout switch disables front A/B buttons
High pass filter, switchable for 20Hz or 40Hz
Automatic on/off by DC trigger with looping output
Automatic on/off by audio signal with 2 sensitivity settings
Fully discrete circuitry with high current toroid transformer
Bridging switch for stereo or mono operation
Efficient, low heat design
DC Servo and relay protection circuits
Rear-mounted left and right gain controls
Standby, channel status and high temperature indicators
Gold-plated RCA input jacks
Heavy duty 24k gold-plated 5-way speaker terminals
115/230v selector on rear panel