The Taramps TL amplifier line currently consists of two products, ideal for interior and three-way car sound systems. They have high technology and low battery consumption. Both models have a High Level audio input (WIRE) and automatic activation by audio level. The additional option of audio input via RCA is exclusive to the TL 1500 Amplifier only. This line can be used with 2-way speaker kits, triaxial speakers, 6x9" speakers, drivers and tweeters. In addition, the TL 1500 model is compatible with subwoofers and has Bass Boost adjustment to reinforce the bass.