inputs.text: excellent 7 band preamp - preamp run 4 stock infinity speakers 2007 mitsubishi endeavor along 10\\ jl audio subwoofer may say terrific amount control preamp gives magnificent play metal dubstep salsa hip hop name able tune output great considering stock speakers say setup pretty simple work rca headphone cable connected straight preamp virtually get no loss audio quality admit got preamp local retailer bargain 70 aside give preamp 5 stars