300 watts (mono) RMS into 8 ohms (500 watts into 4 ohms when driving two subwoofers)

frequency response: 20-1,000 Hz (±3 dB)

high-efficiency BASH (Bridged Amplifier Switching Hybrid) amplifier

continuously variable 40-120 Hz low-pass crossover

speaker-level and line-level inputs and outputs

unfiltered LFE (Low Frequency Effects) input for connection to a home theater receiver's subwoofer output

EQ switch for use with different subwoofers

adjustable phase control

signal-sensing auto on/off mode

rack ears included

black anodized aluminum face plate

detachable AC power cord

17"W x 3-1/2"H x 12-5/8"D

warranty: 2 years

The Klipsch RSA-500 box includes:

RSA-500 Subwoofer amplifier

8' AC power cord

2 Rack mount brackets

4 Machine screws

Owner's manual (English/ French/ Spanish)