Rockford R2-500X1

Product highlights:
mono subwoofer amplifier
300 watts RMS x 1 at 4 ohms
500 watts RMS x 1 at 2 ohms
CTA-2006 compliant
Class-D amplifier design
variable low-pass filter (50-250 Hz, 12 dB/octave)
variable bass boost (0-18 dB at 45 Hz)
variable subsonic filter (15-40 Hz, 12 dB/octave)

More Info:
C.L.E.A.N. gain setup system includes clip lights
wired remote Punch Level Control included
auto remote turn-on
preamp and speaker-level inputs
preamp outputs
wiring, fuse, and hardware not included with amplifier
4-gauge power and ground leads and an 80-amp fuse recommended
dimensions: 8-1/2"W x 2"H x 7-3/4"D
warranty: 1 year
Our 60-day money-back guarantee
MFR # R2-500X1

What's in the box:
Rockford Fosgate R2-500X1 owner's manual
Mono subwoofer amplifier
Wired Remote Level Control module
16' Remote cable (RJ-25 connector on both ends)
One 7" Speaker input harnesses
3mm Allen Hex key
Four 3/4" Screws
Two 1/2" Screws
5 Flat washers
1 Nut
Installation and Operation instructions (English/ French/ Spanish/ German/ Italian)
Certificate of Performance
Rockford Fosgate contact information