Pump up the audio in your ride with this Alpine Next Generation S-Series mono car amplifier. Delivering 600W at 4 ohms, or 1200W at 1 or 2 ohms, this amplifier is powerful enough for speakers and subwoofers.. The compact size provides mounting versatility. When using the speaker-level inputs, the amp can sense the incoming signal and turn itself on, eliminating the need to run a separate turn-on wire to the receiver or fuse box.