Polk Audio PA D4000.4, PA D Series 4-Channel Amplifier, 800 Watts RMS

Sleek, Compact, Powerful, and Really Cool The PA D4000.4 amplifier is capable of bridging two full-range channels into a single full range channel with higher output power. For instance, one front and one rear channel will increase the output power from 125W per channel to 400W per channel (for a 4 ohm load). The most common hookups for the PA D4000.4 would be four full-range channels, two full-range channels and a bridged sub, or two bridged subwoofers. PA D4000.4 Features: Super-Eefficient Class D Design Runs much cooler than conventional amps. Toroidal Transformers Help keep the amplifier’s sleek design under 2" tall while ensuring plenty of clean, efficient power Protection Thermal, DC offset, reverse DC voltage and short circuit protection Nickel-plated wire terminals & RCA connectors Ensure maximum signal transfer Front & rear level controls Adjust the gain of the front and rear channels to match the output voltage from your head unit. Low-pass & high-pass frequen