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Description
HiFonics HCC-2500.1D COLOSSUS Classic Series 2500W Super D-Class Monoblock Car Audio AmplifierHifonics COLOSSUS Classic Mono subwoofer audio amplifier delivers 2500 watts with Super D Class technology that features Ultra Fi MOSFET outputs that are selected for both balance and output power. Class D MOSFET Monoblock Amplifier Peak Power: 1x2500 @ 1 Ohm, 1x1250 @ 2 Ohms, 1x625 @ 4 Ohms Frequency Response: 10Hz 500Hz, Built in bass control with 0 10dB boost 4 AWG Power and 12 AWG Speaker Terminal Wire Gauges Stable at 1 ohm Remote Subwoofer Level
Hifonics COLOSSUS Classic Mono subwoofer audio amplifier delivers 2500 watts with Super D Class™ technology that features Ultra-Fi™ MOSFET outputs that are selected for both balance and output power.
- Class D MOSFET Monoblock Amplifier
- Peak Power: 1x2500 @ 1 Ohm, 1x1250 @ 2 Ohms, 1x625 @ 4 Ohms
- Frequency Response: 10Hz-500Hz, Built in bass control with 0-10dB boost
- 4 AWG Power and 12 AWG Speaker Terminal Wire Gauges
- Stable at 1 ohm | Remote Subwoofer Level Control Included
- Dimensions: 19 × 10.75 × 4.5 in
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Perfect fit and high quality.
Size: (Pack of 1)
Good product, not much to say. The product arrived quickly, looks to be of high quality construction, fit perfectly and took me only a couple of minutes to install. I love it when a product is no frills and delivers as advertised. I've used various filters from K&N before and have always had very good success with them so I will be buying more of these for sure when the time comes.
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Reviewed in the United States on November 9, 2025
★★★★★ 5
Better than most.
Size: (Pack of 1)
Looks good, perfect fit.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Great Filter
Size: (Pack of 1)
This fits fine. Just wish it was a little easier to change.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
More power, slightly lower (8%) MPG.
Size: (Pack of 1)
Installed on a 2.0 liter Subaru Impreza.
I drive up/down the I5 in california 3-4 times a year. For those that don't know there is about a 200 mile flat stretch where everyone runs at 75-85mph.
With various filters (FRAM, BOSCH, Subaru OEM), I would consistently get 29.8 mpg. Once I installed the K&N, I could feel the car pulling with a bit more power, but I noticed that I was getting about 27.5 mpg.
Totally worth it as the impreza is a little under powered and I don't drive many miles (6k/year) but if you are putting a lot of miles on your car, you may want to have more mpg.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
fits my 2013 chevy suburban 5.3 and appears to be high quality
Size: (Pack of 1)
fits my 2013 suburban perfectly. looks to be a well constructed unit.
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Reviewed in the United States on March 29, 2026