If you need help with installing any equipment, even if you didn't buy from me, I'm a Certified Installer. I'm cheaper than all the shops in the area. See below for details. 700 Watts Peak x 1 at 2 Ohms MOSFET Power Supply Low-Pass Crossover: 50 - 200 Hz, 24 dB/octave 15 Hz Subsonic Filter Bariable Bass EQ: 0 - 12 dB @ 50 Hz High- and Low-Level Inputs Blue Power LED Extra-Large Gold-Plated Terminals Dimensions: 9-3/16" W x 2-7/16" H x 9-9/16" D Here are the details of the car audio installation items I can do: Head unit, amplifiers, door speakers, subwoofer designs and builds. Extreme power equipment like alternators, batteries, capacitors, and wiring. I can add just about anything, like subs and amps,to modern vehicle factory units which is difficult to do these days. I can Professionally tune any system. I have all the software and equipment along with a demo vehicle to show you what I can do. You can come and check out. Just reply to any of my products and message any installation questions you have. I'll be happy to give you a quote. Thanks.