
Zapco ST-6X SQ III Amplifier
ST-6X SQ III 6-Channel Class A/B Sound Quality Amplifier Overview & Key FeaturesThe ST-6X SQ III is a 6-channel full-range Class A/B amplifier engineered for high-fidelity audio. It features upgraded sound quality components including refined op-amps and capacitors, plus panel-mount Tiffany-style RCA inputs. With both RCA and speaker-level inputs, auto turn-on, input mode selection, and a new aluminum chassis, this amp offers flexible integration and premium performance. Features 6-Channel Full-Range Class A/B Amplifier SQ Component Upgrades: Op-Amps, Capacitors, etc. Tiffany-Style Panel Mount RCA Inputs RCA & Speaker-Level Inputs Auto Turn-On with Speaker-Level Inputs Variable Input Gain Control Variable Electronic Crossover Variable Bass Boost Control Selectable 2/4/6 Channel Input Modes Durable Aluminum Chassis Technical Specifications Power Output @ 4Ω: 6 x 100W Power Output @ 2Ω: 6 x 150W Bridged Power @ 4Ω: 3 x 300W RMS THD @ Rated Power: < 0.5% THD + Noise: < 0.