Car Amplifier TX-1K8.1SPL 1800W Mono Class D Car Amplifier w/ Bass Controller TX-3K3.1 SPL 3300W Amplifier Mono Class D Car Amplifier w/ Bass Controller TX-5K5.1 SPL 5500W Amplifier Mono Class D Car Amplifier w/ Bass Controller TUNEX1200W Class D Mono Slim CarAmplifier TX1200.D w/ Bass Controller TUNEX 3500w Class D Mono Slim CarAmplifier TX3500.D w/ Bass Controller