Rockford Fosgate PM600X4
Punch marine/powersports 4-channel amplifier — 75 watts RMS x 4
GENERAL FEATURES:
marine/powersports 4-channel amplifier
75 watts RMS x 4 at 4 ohms
150 watts RMS x 4 at 2 ohms
300 watts RMS x 2 at 4 ohms (bridged)
CEA-2006 compliant
Class AB amp technology
marine-grade stainless steel hardware
hidden top-mount control panel
CLEAN set-up technology with LED input/output indicators
speaker-level inputs (speaker wire to RCA adapter required)
conformal-coated circuit board — suitable for powersports and marine applications
2 pairs of RCA inputs, 1 set of RCA outputs
variable low-pass and high-pass filters
fuse rating: 100A x 1 (fuse not included)
frequency response: 20-20,000 Hz
dimensions: 13-3/8"W x 2-7/16"H x 8-13/16"D
A powerful, versatile amp for your boat
Rockford Fosgate designed their PM600X4 4-channel amplifier for marine and powersports applications. You can power systems with front and rear speakers, drive a couple of subwoofers, or switch the amp to 3-channel mode to power a set of speakers and a subwoofer.  
Built tough for life on the water or off the road
Using a Class AB design, the PM600X4 deliver outstanding performance from a compact package. It's built to stand up to outdoor life, too, with conformal-coated circuitry that withstands moisture and dirt and stainless steel hardware that won't succumb to corrosion.
Rockford Fosgate also uses the innovative Maximum Efficiency Heat Sink Application (MEHSA3) construction process, which yields up to five times better heat transfer than traditional mounting techniques. As a result, this amp will rock out without overheating, even when tucked into a tight space.
Level setting made easy
The PM600X4 uses Rockford Fosgate's CLEAN level setting technology, so there's no more guesswork while setting your gain levels. Easy-to-see LED indicators identify clipping so you can set your amp up for maximum performance while eliminating distortion.