Amazon.com: Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer Rated 100W MAX : Electronics
Boss Audio 12" 1400w Car Audio Subwoofer & 1500w Mono Class A/b Amplifier With 8 Gauge Wiring Kit & Qpower Single 12" Vented Subwoofer Enclosure Box : Target
Mtx Tnp212d2 12-inch 400-watt Rms Dual Loaded 1200-watt Car Subwoofer Enclosure Audio With Sub Box And 250-watt Mono Block Amplifier : Target