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Art Audio Diavolo II Silver Reference 300B Monoblock Amps Excellent with original packaging. A custom built reference model. Please call or email if interested.
Good condition, but at £10,000 this is well above the typical used market in our own data: it’s far past the £4,400 75th percentile and massively over the £2,233 median. That makes it an ambitious ask unless this is a truly exceptional example with provenance, fresh servicing, and a compelling accessory package.
That said, this is a serious 300B monoblock design and Art Audio has a strong reputation for lush midrange, scale, and that big, easy musical flow lovers of valves chase. If it’s been properly maintained, with matched valves and original boxes/manuals, the upside is in owning a rare, high-end set rather than buying into a bargain. I’d still want clear service history and confirmation the output valves are healthy.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
# Art Pro Audio Brand Description
Applied Research and Technology (ART) was founded in Rochester, New York, by a team of five engineers—Phil Betette, Tony Gambacurta, John Langlouise, Richard Neutrour, and Terry Sherwood—who previously collaborated at the legendary effects pedal manufacturer MXR. The company emerged from a philosophy of engineering excellence and practical design, prioritizing reliability and affordability over unnecessary complexity. This heritage of precision and innovation has defined ART's trajectory since its inception.
ART initially established itself in the professional recording market, launching with digital reverb units that set the tone for the company's technical focus. The brand achieved widespread recognition with the Tube MP, released in 1995, which became their signature product and remains central to their identity. The company has maintained a strong presence in professional audio equipment, particularly in signal processing and tube-based preamp technology, serving both studio professionals and discerning home audio enthusiasts.
ART occupies a distinctive position as a mid-tier to professional-grade manufacturer with particular strength among recording engineers and vintage audio collectors. The brand is respected for engineering integrity and sonic character rather than mass-market appeal, positioning itself as a specialist choice for those seeking transparent, reliable equipment with genuine tube circuitry. Their reputation rests on decades of consistent product performance and a loyal following among audio professionals who value substance over marketing.
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