Description: Introducing the Sundown Full Bridge line of amplifiers! The “Brazilian Style” SFB packs a powerful punch in a compact size, stable down to 1 ohm per channel. Use the SFB to wire several speakers together on every channel - an ideal amp for a PA mid/high speaker array, a large marine system, or your favorite set of separates. If you are looking for raw power on a budget – look no further!. Features: 500 x 4 @ 1 ohm RMS 300 x 4 @ 2 ohms RMS 200 x 4 @ 4 ohms RMS 4-channel full-range amplifier Variable 12dB low pass filter: 50Hz – 6kHz Variable 12dB high pass filter: 15Hz – 6kHz Variable 12dB Bass Boost @ 50Hz Power, protection & clipping indicators included Thermal, voltage, speaker short, and dc-offset protection circuitry Optional wired remote control with clipping indicator Specifications: Frequency Response: 10HZ-20KHZ(-3dB) Input Impedance: 56k ohms Input Sensitivity 5V Max Minimum Supply Voltage: 9VDC Maximum Supply Voltage: 16VDC Amplifier Type: 4-channel full-range amplifier 1 Ohm RMS Power: 500 x 4 @ 1 ohm RMS 2 Ohm RMS Power: 300 x 4 @ 2 ohms RMS 4 Ohm RMS Power: 200 x 4 @ 4 ohms RMS Operation Voltage: 10.5v-15.5v Recommended Fuse: 180A Signal / Noise Ratio: 100dB Variable 12dB High Pass Filters: 15Hz – 6kHz Variable 12dB Low Pass Filters: 50Hz – 6kHz Dimensions: Length: 9.75" Width: 2.75" Height: 8.28"