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FASCINATION OF SONIC AROMAGenuine valve configuration for whole amp stages even at power supplyLatest sonic-oriented high-quality attenuator for matchless sonic transparency and silky smoothnessEQ circuitry composed of 2-stage NF & SRPP to insure wide-band spectrum and minimum distortionElaborate power supply for high stability and low noiseDirect-accessible EQ output bypassing volume potHigh-mass, vibration-proof chassis for high rigidityValves employed: 12AX7(ECC83) × 3, 12BH7A × 1, EF86(6267) × 1, 6922 × 2, 6X4(EZ90) × 1 Phono input: 2 channels Line input: 1 channel Mode: stereo/mono selector EQ output: direct/buffered (2 channels) Dimensions: 405(W) × 330(D) × 145(H)mm Weight: 12kgsI have also the matching ATH2 Reference step up transformer for MC on a other Reverb saleThis unit is like new with very little use since I have many system. The sound is warm and beautiful with is full point to point tube electronic and tube PSU.
An Air Tight piece at this price is notable because these Japanese tube components tend to hold appeal with serious analog buyers. At US$4,250, this sits well below the US$4,830 25th percentile and far under the US$5,410 median, so it reads as a strong buy rather than just fair value.
That makes it especially attractive if the unit is clean, complete, and functioning properly, since Air Tight gear is respected for refinement, musical ease, and a very “finished” presentation with phono stages. With condition listed as unknown, the main thing to verify is basic health: channel balance, noise, hum, and that any original accessories or packaging are included. At this price, a well-kept example should move quickly.
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.
