Boost your car audio system with the powerful Rockville dB55 5-channel amplifier. It delivers up to 4000 watts peak power (2000W RMS), with four channels for speakers and a dedicated fifth channel for a subwoofer. Features include fully adjustable crossovers, a subsonic filter, bass EQ, and a remote bass control knob. It's CEA-2006 compliant, so you know the ratings are real. Includes mounting screws, wiring, and a birth sheet showing tested power. Great for upgrading factory systems or building a custom setup. Whether you want clearer highs, punchier mids, or thumping bass, this amp handles it all. A solid choice for any car audio enthusiast looking for serious power without breaking the bank.