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Angeboten wird „SV-300BSM 15W 300B monoblocks with Western Electric 300B and Tamura Black Gate - like Kondo, Air Tight, Shindo, Leben, Wavac, Uesugi“ von Sun Audio als Gebrauchtgerät aus der Kategorie „Röhren-Vollverstärker“ bei audio-markt.de - dem Online-Marktplatz für High-End. Das Inserat mit der Nummer 2750367288 endet am 22.06.2026 um 11:54 Uhr.
Condition looks good, but the asking price is still very ambitious: at €11,500 it sits far above the typical used EUR comparables you gave, with a median around €455 and even the 75th percentile only €6,031. That makes this a premium, collector-level ask rather than a normal fair-market buy, so I’d want extraordinary provenance and a very strong tube/accessory package to justify it.
What you are paying for is a famous 300B monoblock platform with real cult appeal: big, saturated midrange, lovely tone, and enough output for efficient speakers without the usual 300B “toy amp” compromises. The Western Electric 300B, Tamura iron, and Black Gate parts are the kind of upgrades that matter to enthusiasts and can make this a special piece if everything is original and healthy. But at this level, I’d verify tube condition, servicing history, bias stability, and whether the premium parts are documented and genuine.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sun Audio appears to be a long-running Japanese audio brand, with references placing its founding in 1980 and its operations in Tokyo. The company’s heritage is tied to the classic Japanese specialist-audio tradition, and it has been associated over the years with tube-amplifier design and development rather than mass-market consumer electronics. That said, the brand’s history is a little opaque in public English-language sources, so precise founder details are not easy to verify with high confidence.
Sun Audio is best known for vacuum-tube amplifiers, especially single-ended triode designs and kits such as 300B-based models. It has also been connected to transformer and pro-audio engineering roots, which helps explain its appeal among hobbyists who value parts quality and hands-on assembly. The brand is not widely known for speakers, turntables, DACs, or headphones; its identity is much more amplifier-centric.
In the market, Sun Audio sits firmly in the niche, enthusiast, and vintage-inspired camp rather than the mainstream high-end. Its products tend to attract buyers who want traditional tube sound, DIY-friendly construction, and Japanese boutique credibility. For knowledgeable hi-fi buyers, it reads as a specialist marque with cult appeal, especially among listeners drawn to SET amplification and classic valve aesthetics.
See all Sun Audio listings on RADAR.
