DESC: Experience real lightning and sonic thunder with the Plasma Sphere series from Power Acoustik. Embedded in the diamond cut heatsink is a mesmerizing Plasma Pulse dish that shoots bolts of intense blue lightning energy from the center to the edge. Not only do the lightning pulses flicker around the dish, they're synchronized with your music! Built-in low-pass and high-pass crossovers with variable frequency controls eliminate the need for an external crossover and make Plasma Sphere amps ideal for driving subwoofers or full-range speakers with clean Power Acoustik power. Other features include full MOSFET PWM (pulse width modulation) power supply, variable bass boost, variable subsonic filter to help protect your subs, and platinum-plated RCA connectors.