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Angeboten wird „ATM-4“ von Air Tight als Ausstellungsstück aus der Kategorie „Röhren-Endverstärker“ bei audio-markt.de - dem Online-Marktplatz für High-End. Das Inserat mit der Nummer 4975904265 endet am 26.07.2026 um 14:58 Uhr.
€6,750 looks fair to slightly strong for a used ATM-4 if it’s complete and genuinely well-kept; without reliable recent comps here, I’d treat it as a buy rather than a bargain-basement score. If the amp is in good cosmetic and operating shape, this is in the zone where condition matters more than a small spread in asking price.
What makes it appealing is the usual Air Tight formula: refined tube tone, strong low-level texture, and the kind of musical ease that keeps high-end listeners interested long after newer gear loses its charm. A clean, original example with proper packaging, service history, and no noise or channel imbalance has real upside because these amps are bought to keep, not flip.
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.
See all Air Tight listings on RADAR.
