The HT-4 is a high powered marine 4 ch full range class d amplifier that allows you to configure it to power any combination of speakers systems. The HT-4 can run multiple Marine Speakers, Marine Speakers and subwoofers, Marine Speakers and tower speakers, tower speakers and subwoofers, multiple subwoofers or used to power tower speakers. High Pass, Low pass and Full range crossover selection on all channels with bass boost adjustment increase the flexibility. Adding to the feature set is RCA input summing that allows you to attach one set of RCA’s to drive all channels or separate the amp into 2 RCA inputs. This makes it very simple to wire and configure the amplifier without the need for additional RCA Y-adapters. Removable power/ground and speaker wire plugs giving you easier installation for wiring up the amplifier in tight spaces.