Punch amplifiers! Rockford Fosgate's Punch 150S amplifier features built-in crossovers to save your speakers from laboring to reproduce frequencies outside of their range. And when you want more low-end kick, you can select up to 12 dB of powerful Punch Bass.
eBay
AIYIMA Audio A3001 TPA3255 300W Subwoofer Amplifier HIFI Mono Power Class D Digital AMP for Passive Speaker Home Theater DIY
Aliexpress UK
The Punch P300X1 is a mono amplifier capable of producing 300 Watts into a 2-Ohm load. The P300X1 full-range frequency response makes it perfect for a subwoofer system or for powering a dedicated center channel speaker.
eBay
AIYIMA 1000W Power Amplifier Board HIFI Sound Speaker Amplify Mono Digital AC110-220V Sound Audio Amp For Home Theater
Aliexpress UK
Bridgeable Yes. Serious Marine Sound! Average Current Draw (13.8V Music). Current Draw (13.8V Sinewave) 18 A. Included In The Box. Efficiency (average). (not included)30 A. Cooling Convection.
eBay
New Upgrade AMP 2CH TPA3255 MONO Split High power Class D Digital Power Amplifier 300W+300W RCA or XLR Input Version (Optional)
Aliexpress UK
You can adjust the low-pass filter, infrasonic filter, and Rockford Fosgate's famous Punch boost to get the best possible bass from the sub and enclosure in your vehicle. ROCKFORD FOSGATE R2-1200X1. It's a simple system to use — turn it up until the light shows red, then turn it down until the red light goes out.
eBay
IRS2092S HiFi 500W Mono Digital Power Amplifier – Class D Audio Amp Board for Home Theater & Pro Audio
Aliexpress UK
Sealed in factory plastic. As is sale. No warranty.
eBay
Ultra-Compact Microphone Preamplifier MA400 Audio Stereo/mono Amp 6.35mm & 3.5mm Jack Preamp Portable Headphone Amplifier
Aliexpress UK
I had this amp fully tested by a engineer for Rockford Fosgate and the amp tested perfect. Rockford Fosgate is located here in Arizona. Amp was NOT repaired and DID NOT need any repairs but just tuned up by a Rockford Fosgate engineer since it's an older amp.
eBay
S1000W Mono Class D Power Amplifier 1000W IRS2092+IRFB4227 Audio Amplifier
Aliexpress UK
The M2-500X1 amplifier can power your subwoofer with up to 500 watts RMS. You can adjust the low-pass filter, infrasonic filter, and Rockford Fosgate's famous Punch boost to get the best possible bass from your sub and enclosure.
eBay
NEW HIFI PASS A3 Mono Single-ended Pure Class A Power amplifier Base On Pass Labs Aleph-3 30W Post Power Amplifier RCA&XLR
Aliexpress UK
Cast aluminum heat sink. (Sum of Rated Power)200 Watts. 200 Watts x 1 @ 4Ω Bridged/Mono. Short Circuit & Over Current Protection. Average Current Draw (13.8V Music). Current Draw (13.8V Sinewave)18 A.
eBay
SOTAMIA HiFi IRS2092S Power Amplifier Board 250W Mono Amplify Digital Sound Amplificador Home Audio Amp DIY Passive Speakers
Aliexpress UK