Boston Acoustics

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  • 2-channel car amplifier
  • Q-Tune™ technology combines sophisticated crossover adjustments with Q-Control settings to seamlessly transition rear bass to the front sound stage
  • High efficiency and output stages delivering increased power into lower impedance and maximum dynamics and transient response
  • DualMode™ High-current, high-power design for 2 channel or mono operation.
  • 1-ohm Stereo / 2-ohm mono stable
  • Advanced fan cooling allows varied mounting positions
  • Fully Adjustable crossover highpass and lowpass crossover for exact integration of speakers and subwoofers
  • Low-profile height 2 3/8"(61mm) allows installation in tight locations
  • Adjustable mounting feet accommodate varied mounting surfaces


Number Of Channels:
2 Channels
2 Ch. Power @ 4-ohm (CEA-2006-A):
125 Watts x 2
2 Ch. Power @ 2-ohm (CEA-2006-A):
200 Watts x 2
Mono Power @ 4-ohm(CEA-2006-A):
400 Watts x 1
Mono Power @ 2-ohm (CEA-2006-A):
600 Watts x 1
2 Ch. Power @ 4-ohm (12vdc)
95 Watts x 2
Frequency Response (-3dB):
Signal to Noise Ratio (A Weighted):
Lowpass Crossover:
12dB / 24dB Adj. (50Hz to 350Hz)
Highpass Crossover:
12dB Adj. (20Hz to 250Hz)
Adj. HP Q (0.707 to 1.6)
2 3/8" (61mm)
13 1/4" (337mm)
Depth: (w/Mounting Feet)
9" (229mm)

Customer Reviews

Reviewer: rich

i bought one gt2125 amps to run the speakers in the rear deck of my car and i couldn't believe how loud and clean it was. so i bought another one for the front speakers. I run them at 1ohm stereo and the power this amp puts out is unbelievable!! dont just buy one!!!

Reviewer: Keith

I purchase this amp because my Zapco C2K-3.0 (2003- died Novenber 15, 2010) bought it used and purchased the Boston GT- 2125 recommended by Frank at Cructhfield and it sounds and performs better than the Zapco. The bass is tight and hits hard! It was the best purchase I made.

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