Brand NEW! BOSS' 2-channel, adjustable B65N connects to a mobile audio head unit's speaker-level output and converts it to line-level RCA output, for use with line-level only mobile audio electronics like equalizers, active crossovers, and amplifiers. Great for adding powered subwoofers to OEM stereos! Key Features Converts speaker output to line-level output Small size and easy to install Two output adjustments for gain matching The adjustable B65N two-channel speaker-level to line-level converter (also called a high-to-low adapter), from BOSS, allows for the installation of line-level mobile audio electronics, such as amplifiers and active crossovers, into systems without a line-level signal by using the head unit's speaker output. Great for adding powered subwoofers to OEM systems. Input sensitivity adjustments allow for fine-tuning the signals sent to amplifiers to prevent amplifier clipping and maximize amplifier output. Built-on mounting tabs facilitate permanent installation. Dimensions (L x W x H): 3.4" x 1.5" x 1.5". - All international buyers are responsible for all tax, duties and/or customs fees.