Description: The flexible SFB (Sundown Full Bridge) amplifiers pack a powerful punch in a compact size! Stable down to 1 ohm, the full-range SFB can be used as a subwoofer amp, or as an ideal power source for an array of P.A. speakers. If you are looking for raw power on a budget, look no further than the SFB Series from Sundown Audio. Features: 600 @ 1 ohms RMS 350 @ 2 ohms RMS 250 @ 4 ohms RMS Variable 12dB low pass filter: 80HZ – 20kHZ Variable 12dB high pass filter: 15HZ – 1kHZ Variable 12dB Bass Boost @ 50Hz 0-9dB Power, protection & clipping indicators included Thermal, voltage, speaker short, and dc-offset protection circuitry Wired remote control with clipping indicator Specifications: Input sensitivity: 5V Max Dual MOS-FET PWM power supply S/N ratio: 86dB Recommended fuse rating: 60A Working Voltage: 10.5v-15.5v Dimensions: 7.25" x 5.00" x 2.50" 1 Ohm RMS Power: 600 @ 1 ohms RMS 2 Ohm RMS Power: 350 @ 2 ohms RMS 4 Ohm RMS Power: 250 @ 4 ohms RMS Operation Voltage: 10.5v-15.5v Signal / Noise Ratio: 86DB Variable 12dB High Pass Filters: 15HZ – 1kHZ Variable 12dB Low Pass Filters: 80HZ – 20kHZ Dimensions: Length: 7.25" Width: 5.00" Height: 2.50"