Compatible Wiring KitThe RetroSound Quadraphonic is a full-range Class D (digital) power amplifier that plugs directly into any RetroSound radio. Featuring 45 watts x 4 RMS power, Quadraphonic offers exceptional dynamic range and low distortion for the best possible sound reproduction from your RetroSound audio system. Low level RCA inputs also allow Quadraphonic to be used with any aftermarket car stereo system. Quadraphonic has a built-in high pass/full range crossover, and its diminutive size means you can install it virtually anywhere, including behind the dash.
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