Pyle Hydra Marine Amplifier - Upgraded Elite Series 240 Watt 4 Channel Audio Amplifier - Waterproof, 4-8 Ohm Impendance, GAIN Level Controls, RCA Stereo Input & LED Indicator (PLMRA120)

KICKER Amp and Wiring Kit Package of 2 Items 600W 6-Channel KMA Series Marine Amplifier with 4AWG Power Wiring Kit - Boat Kit - 48KMA600.6 Amplifier & 47KMPK4 Wiring Kit

Soundstream ST4.1000DB ST4.10000DB Stealth Series 1000W Class D 4-Channel Amplifier

Pyle 6-Channel Audio Marine Amplifier - Compact Power 600 Watt RMS 4 OHM Full Range Stereo with Volume Bass Treble Rotary Control - Wireless Bluetooth Receiver Speaker & LCD Digital Screen PFMRA640BB

Kicker 48KXMA8004 KXMA800.4 4x200w 4-Ch Full-Range Class-D Marine Amplifier

Pyle 2-Channel Marine Amplifier Receiver - Waterproof and Weatherproof Audio Subwoofer for Boat Stereo Speaker & Other Watercraft - 400 Watt Power, Wired RCA, AUX and MP3 Audio Input Cable PLMRMP1B

Pyle PLMRA120 Hydra Series Waterproof 240-Watt 2-Channel Marine Class AB Amp

Pyle Hydra Marine Amplifier - Upgraded Elite Series 1000 Watt 4 Channel Bridgeable Amp Tri-Mode Configurable, Waterproof, MOSFET Power Supply, GAIN Level Controls and RCA Stereo Input - PLMRA420

KICKER Amp and Wiring Kit Package of 2 Items 800W 4-Channel KXMA Series Marine Amplifier with 4AWG Power Wiring Kit - Boat Kit - 48KXMA800.4 Amplifier & 47KMPK4 Wiring Kit

MB Quart 4CHANNEL Waterproof AMP,4X140W (NA3-560.4)