This amplifier is made for bi-amping speakers that have bi-wireable passive crossovers.
One pair of binding posts connect to the low posts and the other pair to the high level posts.
Dual TPA3116D2 amplifiers handle the power and are handed off the audio signal by a Teradak brand Vishay precision resistor stepped attenuator volume control. There are only two 1% tolerance Vishay resistors in the signal path before hitting the circuit board. The amp is wired with plenum grade Cat5e (teflon insulated) & shielded copper cable. Solid brass, vintage look toggle style power switches, gold plated, solid metal binding posts, gold plated RCA's, 3M elastomer vibration isolation pads and a textured black enamel round out the aesthetics. Individual power supplies can be used for each section or a single, 10amp or better single supply with two power cord leads.