4/3/2 Channel Operation High Temperature Protection Subsonic Filter Bass EQ Circuit Adjustable Crossover (HP/LP) MOSFET Power Supply DC-DC PWM Power Supply Discrete Pre-Amp Stage STAR Circuitry Auto Over-Current Protection MultiMode? Top Mounted Blue LED Power/Status Indicator Input Channel Selector Gold Plated RCA Input Connectors Continuously Adjustable Gain Control Speaker Level Inputs Gold Plated Power Screw Terminals Gold Plated Speaker Terminals 4-Layer Glass Epoxy PC Board