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Angeboten wird „ATM-300 R Reference Single Ended Stereo Verstärker“ von Air Tight als Neugerät aus der Kategorie „Röhren-Endverstärker“ bei audio-markt.de - dem Online-Marktplatz für High-End. Das Inserat mit der Nummer 112984774 endet am 08.10.2026 um 08:09 Uhr.
At €17,400, this used Air Tight ATM-300 is priced just €15 below the median of €17,415 from your three recent EUR comparables, making it a fair and honest market ask rather than a bargain or an overreach. While HifiShark’s broader 2026 dataset suggests a lower estimated median of €11,475 across 13 listings, your ground-truth comparables are the primary anchor, and against them, this price sits squarely in the fair zone—neither ambitious nor cheap.
The ATM-300 remains a cult favorite for its legendary 300B single-ended Class-A tone: unmatched timbral purity, tight bass, and musical realism that SET designs rarely achieve outside this tier. Its 8Wpc output demands sensitive speakers but delivers intoxicating warmth and clarity. At a fair price in original-EUR condition, this is a genuine buying opportunity for enthusiasts who value Japanese hand-made craftsmanship and the rare, jubilee-reputed charm of genuine 300B direct-heated triodes. No caveats apply here—this is a clean listing of a well-loved amp at a fair price.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Air Tight emerged from the vision of Atsushi Miura, a veteran Luxman engineer who joined the company in 1956 and championed vacuum tubes amid the shift to transistors. Retiring in 1985, Miura partnered with Masami Ishiguro to found A&M Ltd. in Osaka, Japan, launching the Air Tight brand in 1986. Their debut ATM-1 power amplifier, a push-pull EL34 design, embodied a philosophy of direct signal paths, point-to-point hand-wiring, and premium components, rejecting printed circuit boards for purest sound.
The brand specializes in artisanal tube amplifiers, preamplifiers with phono stages, and select integrated models, all hand-assembled in small batches by father and son in their Osaka facility. While primarily focused on amplification, Air Tight emphasizes tube-centric purity over broad categories like speakers, DACs, or headphones, prioritizing meticulous construction for uncolored, lifelike reproduction.
Positioned firmly in the high-end niche, Air Tight commands reverence among audiophiles for its confidential, zero-compromise production and reference-grade performance. Legendary status stems from decades of global appeal, from early exports to Hong Kong and China, making it a boutique choice for discerning buyers seeking Japanese precision and tube authenticity over mass-market volumes.
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