BOSS Audio Systems R2504 Riot Series Car Audio Stereo Subwoofer Amplifier - 1000 High Output, 4 Channel, Class A/B, 2/4 Ohm, High/Low Level Inputs, High/Low Pass Crossover, Bridgeable, Full Range

Power - 250 Max x 4 @2-Ohms, 125 Max x 4 @4-Ohms, 500 Max x 2 Bridged @4 Ohms. Class A/B Topology - Class ‘A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class ‘B’ amplifiers have no current flowing through its outputs with no audio signal. Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers. Variable Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier. Variable Bass Boost - With Variable Bass Boost you have the control of exactly how much BASS you want to pump out to your subwoofer(s). Fixed High-Pass Crossover - Speakers reproduce sound based on high, low or mid-range frequencies. The High-Pass Crossover gears specifically towards “highs” such as all size speakers including mid ranges and tweeters. Bridgeable - Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels. Specs - Dimensions: 10.72” x 10.44” x 2.25”, Weight: 5.80 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 102 dB, Frequency Response: 9 Hz to 50 kHz, Fuse Quantity: 2 25 Amp ATO Blade. Warranty - BOSS Audio Systems provides a powerful 6-year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality