The Boston Acoustics GTA-704 is a high-performance, 4-channel car amplifier that will significantly improve your car speakers’ output. The 6 dB bass boost of this Boston Acoustics car amplifier helps you to obtain the appropriate amount of low-frequency punch. The Boston Acoustics car amplifier incorporates a 12 dB crossover that filters the frequencies, so that you get clear highs and lows. The 4-channel output of the Boston Acoustics GTA-704 contributes to the amazing audio experience. A 3-way system protection circuitry safeguards the 4-channel car amplifier from short circuit, thermal, and overload damages, ensuring a more reliable performance.