Infinity Reference 551a-550 watts RMS x 1 at 2 ohms Mono Subwoofer Amplifier


Infinity Reference 551a-550 watts RMS x 1 at 2 ohms Mono Subwoofer Amplifier


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Power delivered in style

Infinity's Reference 551a mono amp will add some bass muscle to your music without breaking a sweat, and it'll look good doing it. This potent powerhouse will send up to 550 watts RMS to your subwoofer, and its Class D design ensures the amp's high output will put minimal strain your vehicle's electrical system.

Works in almost any vehicle

Speaker-level inputs allow this amplifier to work in almost any system, even if you're hanging on to your factory radio. You can use the low-pass filter and variable bass boost to maximize the performance of your subwoofer and enclosure, while a phase switch ensures that the bass will blend well with your full-range speakers.

Product highlights:

  • mono subwoofer amplifier
  • 370 watts RMS x 1 at 4 ohms (550 watts RMS x 1 at 2 ohms)
  • Class D amp technology
  • variable low-pass filter (32-320 Hz, 12 dB/octave)
  • variable bass boost (0-9 dB at 45 Hz)
  • phase switch (0, 180 degrees)
  • preamp and speaker-level inputs
  • fuse rating: 30A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 9-3/8"W x 2-1/4"H x 7-5/16"D
  • warranty: 1 year
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