SAZ-1500D Limited Edition - Sundown Audio Monoblock 1500W RMS Amplifier Features & Specifications: Double Sided Through Hole Epoxy PCB 1 OHM Stable Circuit Daisy-Chain Through Output RCA Two Amp Linkable Function: Output Master and Input Slave Efficiency: 86% @ 4OHM, at 100Hz 24DB/Oct Variable Crossover Multi-way Protection Circuitry (Thermal / Over Current / Speaker Short / Speaker DC Protection) RCA Input and RCA Master Output to RCA Slave Input Input Sensitivity: 200MV ~ 6V Subsonic Filter: 10Hz ~ 60Hz Variable Bass Boost: 0 ~ 6DB Variable Low Pass Filter: 35Hz ~ 300Hz Variable Phase Shift: 0 ~ 180 Degree 0 Gauge Power & Ground Supply Connectors 8 Gauge Speaker Connectors Signal / Noise Ratio: >90DB Damping Factor: +350 Tested Voltage & THD: 14.4V & Less Than 1% THD Operating Voltage: DC 10V ~ 18V Power Input Wired Remote Controller Dimensions: 18.5" L x 10" W x 2.25" H