Boston Acoustics

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High Performance Mobile Amplifier


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Boston Acoustics SPG555.

  • High efficiency Class D design
  • Boston’s Q-Tune™ circuitry for Simple Bass Output Optimization
  • SST™ (Symmetrical Signal Topology) system uses balanced asymmetrical inputs for noise cancellation
  • Fully adjustable and selectable Lowpass/Highpass crossovers
  • Wrap-around heatsink design for ample cooling in multiple mounting positions
  • Compact chassis allows for placement flexibility
  • Dedicated High- (speaker level) and Low- (RCA) level inputs
  • Optimal angled speaker and power blocks for easy wire connections
  • All input/output connections are located on one side of the amplifier to ease installation and wire management
  • IMS™ (Integral Mounting System) reduces the amplifier footprint
  • Recessed control panel for clean installation and concealed wire management
  • Optional GTA-RSL remote gain for controlling the subwoofer volume from the drivers seat


Number Of Channels:
1 Channel
Frequency Response (-3dB):
Signal to Noise Ratio (A Weighted):
Lowpass Crossover:
12dB Adj. (50Hz to 150Hz)
Highpass Crossover:
12dB Adj. (10Hz to 50Hz)
2 3/8” (60mm)
10 5/8" (268mm)
8 3/8” (211mm)
Power @ 4-ohm Mono (CEA-2006-A):
300 Watts x 1
Power @ 4-ohm Mono(CEA-2006-A):
500 Watts x 1

Customer Reviews

Reviewer: will

it was running great for about 4 months and then it overheated as soon as it was over 85 degrees outside. WTF!

Reviewer: andrew

this amp is powering my rockford fosgate sub. this amp pushes my sub beautifuly and so powerfully its amazing what true watts this amp throws out dont mess with anyone but boston acoustics. true watts is all they do i love it!!!!!!!

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