Brand NEW! POWER: 2500 Watts Max x 1 @2-Ohms, 1250 Watts Max x 1 @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 MOSFET POWER SUPPLY: A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage and current precisely by removing the output current sensing loss eliminating all secondary feedback circuitry VARIABLE LOW-PASS CROSSOVER: Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction SWITCHABLE BASS BOOST: Bass Boost allows you to adjust the low bass within the boost range to just the way you like it 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 DIMENSIONS: The BE2500. 1 is 10 inches in Depth, 7 inches in Width and 2. 3 inches in Height. It weighs 4. 5 lbs. Monoblock 1250w x 1 @ 4 Ohm 2500w x 1 @ 2 Ohm Full-Range, Class A/B 2 ? Stable PWM MOSFET Power Supply RCA Speaker Level Inputs Low Pass Filter Bass Boost Remote Subwoofer Control 12-3/4" x 7" x 2-9/32" (324 x 178 x 58 mm) We strongly encourage professional installation of this product to ensure proper and safe functionality - All international buyers are responsible for all tax, duties and/or customs fees.