Your first source in the United States for the finest in Italian loudspeakers, legendary American amplification, and modern signal processing.
Conceived and built in Italy, ESB loudspeakers are an exercise in obsession — cones, domes and motors engineered without compromise for those who hear what others miss.
Enter the house → Since 1974 American Sound QualityFifty years of the pursuit of perfect sonic reproduction. Zapco's amplifiers built the sound-quality legend — and the modern Reference, Z-II and DSP-IV ranges carry it forward.
Enter the house → by Zapco Engineered ValueHarmony brings Zapco engineering to a wider audience — integrated DSP amplifiers, media stations and subwoofers that punch far above their price.
Enter the house →A selection from the top of each range — engineered for those who refuse to compromise.
Yes. Riotous Audio is an authorized United States dealer for ESB Audio, Zapco and Harmony, supplying genuine product with full manufacturer backing.
ESB Audio high-end Italian loudspeakers, Zapco amplifiers and signal processors, and Harmony integrated DSP amplifiers and subwoofers.
Riotous Audio is a United States venture of Riotous Consulting LLC, a Service-Disabled Veteran-Owned Small Business.
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