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
Mono subwoofer amplifier. Class-D amplifier design. variable Punch bass boost (0-18 dB at 45 Hz). Variable Infrasonic Filter. variable low-pass filter (50-250 Hz, 12 dB/octave). variable subsonic filter (15-40 Hz, 12 dB/octave).
eBay
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 R2-500X1. 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
ROCKFORD FOSGATE Punch P500X1BD. The Punch P500X1BD is a mono amplifier capable of 500 Watts into a 1-Ohm load. 1 Channel 500 Watts Mono Amplifier. On-board Punch EQ with +18dB boost @ 45Hz. Total Power (Sum of Rated Power): 500 Watts RMS.
eBay
1500 Watt Class-bd Constant Power Amplifier. The new Constant Power amplifiers are the most powerful amplifiers on the market PERIOD! The listening experience is cleaner, louder and more impressive than ever before.
eBay
Mono subwoofer amplifier. Class-D amplifier design. variable Punch bass boost (0-18 dB at 45 Hz). Cast aluminum heat sink. Variable Infrasonic Filter. variable low-pass filter (50-250 Hz, 12 dB/octave).
eBay
Flexible vehicle integration enabled through low-level and high-level inputs with auto turn-on. Total Power (Sum of Rated Power) 400 Watts RMS. Heat Sink Type: Extruded Aluminum. Number of Channels: 2.
eBay
(Class-D amplifier design. Cast aluminum heat sink. Full Range Class D. 4) All products sold are GENUINE UK products bought direct from manufacturers. 50 watts RMS x 2 at 4 ohms. Fully Adjustable 12 dB/octave High and Low pass Butterworth Crossovers.
eBay