Item dimensions L x W x H 6.5 x 5.1 x 1.7 inches Voltage 12 Volts (DC) Manufacturer seventour Maximum Supply Voltage 14 Volts (DC) Mounting Type Under Seat Mount ✅【Car Audio Equalizer Built-in Amp】 P48E Car Equalizer Built-in TDA7850 Amplifier Chip, Peak Powers: 4*50 Watts, Noise Ratio ≥90dB, THD ≤0.01%, Sampling Rate: 48Khz/24bit.Equalizer comes with amplifier, It can directly amplify enhance and adjust up to 8 speakers of the original car ! ✅【4 tuning methods】 Seventour P48E Car DSP With 4 tuning modes , APP/manual knob/Controller (optional)/PC software, whether you are a novice or a professional tuner, you will be able to find a suitable tuning mode for you. ✅【31-Band Equalizers Control】 T