Specifications: Features: 4 channel v12 high output amplifier 125 watts rms x 4 chan. @ 4 ohms 500 watts x 2 bridged LCD display: Shows system voltage, current, temperature, and other system dynamics Detachable top cover (amp controls are under detachable panel) Thermal management processing Connects to compatible alpine head units Built-in high and low pass crossovers Mosfet power supply Pwm power supply Current + overload protection Gold plated rca input connectors Non-fading pre-amp output Frequency response:10 hz - 50 khz Dimensions:16-1/2 L x 8-11/16 w x 2-5/16 h Bass boost 0 - 16 db Signal-to-noise ratio 93 db Fuse rating 20a x 5