The 4 channel SS4a may be one of the most versatile amps we’ve ever offered. With 160 Watts delivered into 4 channels at 4 Ohm and 240 Watts of power at 2 Ohm per channel, the SS4a can be used in high output 4 ch systems, drive 3 ch systems with close to 500 watts to the sub and 240 per channel to the mid/high speakers. In bridged stereo mode, the SS4a delivers close to 500 Watts per channel. The new discreet, full range class D circuit is groundbreaking in its compact use of space and low current draw while delivering crystal clear sound.