RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
New, the Zen Ultra starts around US$3,095, so a used ask of US$2,900 is only a mild discount rather than a standout bargain. Against recent used examples around US$3,095 to US$4,500 depending on upgrades and accessories, this lands in fair-to-ambitious territory if it’s the standard unit; if it includes meaningful options or a strong tube set, it becomes more reasonable.
That still makes it interesting because the Ultra is a well-regarded all-tube, 6-channel preamp that also works nicely in serious two-channel systems, with the kind of clarity and tonal body Decware buyers chase. At this price, the real upside is condition, originality, and whether it comes with the factory tubes, upgraded attenuators, or other documented extras; if it’s clean and complete, it’s a credible buy rather than a risk.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
# DECWARE
DECWARE, a trademark of High Fidelity Engineering, was founded in the mid-1990s by Steve Deckert in East Peoria, Illinois. The company emerged as a pioneering force in the low-powered vacuum tube amplifier movement in the United States, introducing the iconic Zen Triode amplifier in 1996—a remarkably simple 2.3-watt single-ended triode design that has since sold over 6,000 units across seven revisions. This foundational product established Deckert's philosophy of elegant minimalism and point-to-point hand-wired construction.
DECWARE specializes in tube amplifiers and loudspeakers manufactured entirely in the USA. The product line centers on integrated amplifiers, with the current flagship being the SE84UFO, a class-A zero-feedback design featuring an exceptionally minimal signal path. The company also produces complementary speaker systems designed to pair with their low-wattage amplifiers. All products are hand-assembled and built to exacting standards using premium components.
Positioned as a boutique, high-end manufacturer, DECWARE commands respect among discerning audiophiles and SET (single-ended triode) enthusiasts worldwide, with products distributed to over 54 countries. The brand is known for direct-to-consumer sales, lifetime warranties, and a 30-day return policy. DECWARE occupies a niche segment where affordability meets uncompromising sonic philosophy—accessible entry points into tube audio without sacrificing design integrity or build quality.
See all DECWARE listings on RADAR.
