This 668 4 Channel Amplifier is a perfect entry level amplifier for your car audio needs. It has high quality circuit and hardware designs along with exclusive technologies to improve sound quality and minimize distortion. Each channel of your amplifier can easily drive 4Ω speaker loads when used in the stereo mode. when a channel - pair is bridged. the recommended minimum load impedance is 3Ω for subwoofer use, and 4Ω for full range operation. Puts more aluminum on the heatsink than a normal amplifier. Assures the amplifiers make huge power while running very cool with nearly undetectable musical distortions. Proper system planning is the best way to maximize your amplifier performance. Specifications:
Material: Lightweight Aluminum
Voltage: 12V
Power: 3200W
4Ohm Rated Power: 4x100W
Maximum Power: 1000W
Dimensions: 343x232x55mm
Sensibility: 90dB
Frequency response: 20Hz-20KHz
Primary Color: Black

Function Operation Instructions:

1. Power on off
Connect the power supply , the 12V is connected to the level positive electrode, and the negative pole of the ground wire and the level are connected together.
The control line connected to the car key control power of sound subwoofer control line. The machine is switched on automatically and blue light is on , and when this red light is on , the speaker is short circuited.

2. Volume Adjust
Rotary volume potentiometar can adjust small volume or eniarge volume.

3. Full frequency and bass selection adjustment
The switch is placed in the bass position , At this time only the bass output is used, The potentiometer can change the bass frequency to meet the different requirements of the bass.

4. Regulating treble and bass
Adjusting the treble and bass potentiometer can change the bass effect.

Package Included:
1x 4 Channel Car Amplifier
1x Screw Kits
1x User’s Manual