Profile: C-Tech specializes in providing headphone amplifiers. We also provide accessories such as 9-volt battery charger, cabel kit and bass stereo headphones. Our bass product V1b includes four amp emulation modes, active/passive pickup compensation, variable EQ, line out external speakers and headphones. Cable kit includes a 1/8 to 1/8 inch stereo mini plug cable 6 feet long, a 1/8 inch stereo headphone splitter, a 1/8 to 1/4 inch stereo adapter plug and a mono 1/4 to 1/4 inch female adapter tube.