Pyle Marine Receiver Speaker Kit - 4-Channel Amplifier w/ 6.5&rdquo; Speakers (4) Waterproof Poly Bag 3.5mm Jack RCA Adaptor for MP3/iPod & Volume Gain Remote Control & Power Protection Circuitry - PLMRKT4B POWERFUL 4-CHANNEL AMPLIFIER: The included amplifier provides up to 800-watt max power at 8 ohms on each channel. It also contains an electronic crossover network, adjustable high/ low-level inputs, and stereo RCA line-level inputs 4 MARINE SPEAKERS: This kit includes two pair of 6.5" two-way marine speakers finished a pristine marine white. Each speaker contains a high-quality polypropylene cone and 2" polymer cone tweeter for deep lows, rich mids, and sweet highs BAG AND 3.5mm JACK: Pyle amplifier kit comes with a waterproof poly bag with 3.5mm jack stereo to RCA adaptor from your iPod/MP3 player to protect the device. You can also connect standard high and low-level inputs from a marine head-unit receiver VOLUME GAIN CONTROL: The gain control adjusts the overall level of the amplifier and achieves a balance with other loudspeakers in the system. The waterproof remote volume control will power off the amp when turned all the way down POWER PROTECTION CIRCUITRY: Pyle marine amplifier features power protection circuitry, and soft turn on/off that prevents from damaging your speaker equipment. Built-in mounting brackets and includes hardware for convenient installation