If you're in need of an amplifier that takes up little space but delivers a big sound, Soundstream's Stealth amplifiers can fill the bill. At about 3" deep by 7-1/2" wide, the SM4.1000D 4-channel amp will fit just about anywhere, delivering 90 watts per channel to your front and rear speakers, or up to 250 watts per channel in 2-channel mode to your subs. That's a lot of power in a tiny package. 90 watts RMS x 4 at 4 ohms (125 watts RMS x 4 at 2 ohms) 250 watts x 2 bridged at 4 ohms Mosfet power supply. Quick Disconnect RCA/High Level Wire Harness Preamp and speaker-level inputs Variable high- and low-pass filters (35-250 Hz, 12 dB/octave)