JBL MA704 4 Channel Amplifier

Space-age power

If you've ever tried to power your boat's speakers with a marine radio, then you know that you need serious power to get good sound out on the open water. Sporting a sleek stealthy profile, JBL's MA704 marine amplifier will deliver 70 watts RMS each of four separate speakers. The amp could also power two speakers and a sub, in 3-channel mode. For even louder fun, you could bridge the amp to 2-channel mode and power a couple high-performance speakers with 200 watts RMS each. And JBL uses a coated circuit board and stainless steel connectors to ensure that this amp will rock for many seasons to come.

Works with almost any system

Speaker-level inputs allow this amplifier to work in almost any system, even if you're keeping your boat's original radio. The separate high- and low-pass filters on the front and rear channels help maximize the performance of your speakers and subs.

Product highlights:

• 4-channel marine amplifier
• 70 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
• 200 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
• Class D amp technology
• variable high- and low-pass filters (32-320 Hz, 12 dB/octave) on front and rear channels
• conformal-coated circuit board and stainless steel connections resist salt water corrosion
• preamp and speaker-level inputs
  • high-level input adapter included
• preamp outputs
• fuse rating: 30A x 2
• wiring and hardware not included with amplifier
  • 8-gauge marine-rated power and ground leads recommended
• dimensions: 14-11/16"W x 2-3/8"H x 7-5/16"D
• warranty: 1 year

What's in the box:

• 1 amplifier
• Stainless steel mounting hardware
• Rubber inserts
• 4 High-level input adapters
• 2 spare fuses
• 2 2-color brand stickers
• Quick start guide