To accomodate its high current design, the XPA-3 is fully discrete, with seperated components. The XPA-3 is also dual differential, and offers a favorable signal to noise ratio (1 watt/<98db, full power/<112db), so that you will not have distortion messing up your clean sound when you use high volumes. The Triple Darlington output stages also help to cut down on noise. The digital status indicators let you know visually what is on and what is not. Connection to speakers is made with the XPA-3's 5-way binding post outputs. This amplifier differs from the higher cost XPA-5 model in that it lacks the XPA-5's five channels. This amplifier differs from the higher cost XPA-2 model in that it lacks the XPA-2's higher power levels (300 watts RMS x2 into 8 ohms, 500 watts RMS x2 into 4 ohms). Like all of the amplifier models in this series, the Emotiva XPA-3 is fully protected from all fault conditions.