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ART AUDIO Diavolo 300B valve  power amplifier with Border patrol psu
Art Audio 5 views

ART AUDIO Diavolo 300B valve power amplifier with Border patrol psu

USD$5,920 GBP$4,400
Location
GB
Seller
emporiumhifi
Source
eBay UK
Posted
21 May 2026
Last seen
11h ago

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Our Thoughts RADAR AI

Against a typical used amp in this bracket, £4,400 looks ambitious: it’s well above the £3,317 75th percentile and far past the £2,234 median, so I’d only lean in if the package is unusually complete or freshly serviced. Based on the recent comparables, this is not a fair-market bargain; it’s priced at the top end of the cluster and then some.

That said, this is a serious SET-style power amp with a strong reputation for tone, scale and a very “alive” presentation, and the Border Patrol PSU is the kind of addition that can make these especially desirable to the right buyer. If the condition is genuinely excellent, with proof of servicing, original boxing and full documentation, it may still be worth a close look — but at this ask, the burden is on the seller to justify the premium.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Art Audio

# 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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