Plays loud and clear

Why put an amplifier in your car? Pioneer's GM-A4704 4-channel amplifier will greatly improve the sound quality in your vehicle, so you'll find yourself looking forward to your time on the road. This punchy Pioneer will power your front and rear speakers with 40 watts RMS each, which is actually a large jump over the power supplied by a typical car radio. You'll hear much more of the little details in your music, especially when you turn your system up to overcome road noise.

4-channel versatility

Here's why lots of people start building their systems with a 4-channel amp. You can run your front speakers with the front channels (A) on this Pioneer, then combine the rear channels (B) to drive a subwoofer. Then, when you've got enough cash to buy a second sub and a dedicated amp for your bass, you can use your 4-channel to run all your speakers. You can also put this versatile amp into 2-channel mode to send up to 130 watts RMS each to a couple of component speakers or subwoofers.

Tone controls

The front channels sport variable high-and low-pass filters so you can better adjust the sound for critical front soundstaging or a finely-tuned bass. Switchable high- and low-pass filters on the rear channels help take the rumble away from full-range speakers or the sizzle away from a sub. Speaker-level inputs allow you to add the GM-A4704 to a factory system. If your vehicle needs a sonic upgrade, this amp's performance features and reasonable price make it a great choice.

Product highlights:

• 4-channel car amplifier
• 40 watts RMS x 4 at 4 ohms (65 watts RMS x 4 at 2 ohms)
• 130 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
• CEA-2006 compliant
• Class AB amp technology
• variable high-pass (40-500 Hz, 12 dB/octave) and switchable low-pass (80 Hz, 12 dB/octave) filters on A channels
• switchable high- and low-pass filters (80 Hz, 12 dB/octave) on B channels
• preamp and speaker-level inputs
• fuse rating: 30A x 1
• 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
• 12-1/16"W x 2-3/8"H x 8-1/2"D
• warranty: 1 year

What's in the box:

• 4-Channel amplifier
• 30A ATO fuse (installed)
• Speaker-level input harness with eight 4" wires
• 4 Self-tapping screws (3/4" length)
• Owner's Manual (Eng / Fren)
• Owner's Manual (Span)
• Warranty sheet