The 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…

This powerful 5-channel amplifier has four 65 watt RMS full-range channels for mids and highs – plus a mono channel with up to 330 watts (2 ohms) for a subwoofer – allowing a complete audio system to be built using a single…

This unique 3-channel amplifier has two 65 watt RMS full-range front channels for mids and highs – plus a mono channel with up to 229 watts (2 ohms) for a subwoofer – allowing a complete audio system to be built using a single…