With the growing demand for amplifiers compatible with original head units, we've designed the TS 400×4 to include high-level inputs with automatic activation, eliminating the need for adapters. This makes it perfect for such applications. Boasting 400 watts of power across 4 channels, which can be bridged into two channels, this amplifier is versatile enough to work with a wide range of speakers, drivers, and super tweeters. It also features traditional RCA inputs, gain adjustment, and fixed crossover settings (HPF, LPF, and Full), maintaining the high standards of Taramps products. Experience enhanced audio enjoyment with the TS 400×4.