Zapco ST-4X 4-Channel Amplifier

The Zapco ST-4X is a premium 4-channel, full-range Class A/B amplifier designed to deliver legendary sound quality in a compact, easy-to-install chassis. Equipped with upgraded components like top-shelf caps and op-amps, it offers exceptional thermal efficiency and a precise sound stage. It features variable crossovers, electronic bass boost, and robust terminal blocks, making it an ideal choice for high-fidelity car audio upgrades.