JVC KSAX3201D CAR AMPLIFIER 800 WATT MONO BLOCK Max. Power Output of 800W Continuous Power Output: 250W x 1 at 4 ohms, 400W x 1 at 2 ohms Class-D Circuit MOS-FET Power Supply MOS-FET Output Stage Frequency Response: 20 - 200Hz (-3dB) S/N: 60dBA at 2Vrms THD: Less than 0.08% at 4 ohms, 100Hz LPF (50 - 200Hz, -18dB/oct) Subsonic Filter Variable Input RCA Level Control (0.2-5V) Variable Speaker Input Control (0.6 - 15V) Variable Bass Boost Control (45Hz, 0 - 18dB) Nickel-Plated RCA Terminals Nickel-Plated Power Supply Terminals Nickel-Plated Speaker Out Terminals Protection Circuitry (Thermal/Short Circuit/Overload/DC Offset) Anti-Pop Circuit Power On Indicator (GREEN)/Protector Indicator (OFF) .