Pioneer GM-A6704 Car Amplifier

4-Channel - Class AB, 1000w Max Power - Bridgeable Amplifier

GM-A6704 4-channel amplifier will greatly improve the sound quality in your vehicle. This amplifier will power your front and rear speakers with up to 95 watts RMS each. You will hear much more of the little details in your music, especially when you turn your system up to overcome road noise. With this amplifier, you can run your front speakers with the front channels (A), then combine the rear channels (B) to drive a subwoofer. You can also put this versatile amp into 2-channel mode to send up to 190 watts RMS each to a couple of component speakers or subwoofers. The front channels have a variable high-and low-pass filters to adjust the sound for front sound staging or a finely tuned bass. Switchable high and low pass filters on the rear channels to enhance the full-range speakers. Speaker-level inputs allow you to add this amplifier to a factory system.

Bass Boost

This amplifier can be set bass boost to levels variably from 0 to 12 dB for optimal bass. With this precise control it enhances the overall balance and impact of all sounds according to listening preference and music style. The amplifier allows adjustment in three steps: 0 dB, 6 dB or 12 dB.

Variable HPF

Variable HPF (High Pass Filter) allows for adjustable frequency between 40 Hz to 500 Hz* and greater car audio system flexibility according to subwoofer characteristics and personal listening preference.

Automatic Signal Sensing and Turn-On

Pioneer amplifiers automatically select the proper input signal mode, either RCA or speaker level. When the receiver is turned on, the amplifier automatically turns on. When connected to an OEM receiver or a receiver without RCA output and utilizing speaker level output, the amp automatically senses the input mode and powers up in sync with the receiver. When connected to an OEM receiver or a receiver without RCA output using speaker wire the amplifier is turned on at the same time as the receiver. Pioneer's amplifiers automatically detect the input signal and select RCA level or speaker level.

Growing Power-Shrinking Size

New Pioneer amps brilliantly integrate high-power performance superior to that of previous models in space-efficient sizes for flexibility of installation in various car cabins.

Technology of the GM Series

From dramatic distinction to intricate design, Pioneer's new GM-Series amplifiers are thrillers in every sense, pushing the limits of flexibility and functionality.

Amplifier Class: Class AB

No. of Channels: 4/3/2

Max.power output: 170 W x 4 (4Ω) 250 W x 4 (2Ω) 500 W x 2 (4Ω Bridged)

RMS power output: 60 W x 4 (4Ω) 95 W x 4 (2Ω) 190 W x 2 (4Ω Bridged)

Frequency Response: 10 Hz to 70 kHz

Impedance: 2Ω to 8Ω

Total Harmonic Distortion(THD): <0.05%

S/N Ratio: >95 dB

Speaker Level Input: Yes

Automatic Signal Sensing and Turn-On: Yes

Crossover Type: Variable HPF/LPF (A-Ch) HPF/LPF (B-Ch)

Crossover Frequency: A-Ch: HPF: 40 Hz to 500 Hz LPF: 80 Hz B-Ch: HPF/LPF: 80 Hz

Bass Boost Frequency: 50 Hz

Bass Boost Level: 0/6/12 dB

Dimensions: 356 mm x 60 mm x 215 mm