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Air Tight ATM 2 Plus Power Amplifier As new trade in, less than 30 hours use. Original box. Shipping to Australia and NZ included in price. We are a retailer based in New Zealand. More info here: http://www.airtight-anm.com/_src/18620/atm2plus_low.pdf?v=1722502340720 ● 4x7FQ7/6CG6 (Bias Fixed (4x-88/6550KT (5%>THD/kHz1 (W+70W70 : Output Power Rated● (W/1dB-1(@kHz60~Hz10 : Response Frequency● (W/50dB-1(@kHz50~Hz20 kΩ100 : Impedance Input● Channels 2 : Input● (RCA both ,Front x 1 ,Back x 1( (option Ω16 (Ω8 High / Ω4 Low : Impedance Load● Switch Selector Input : features Aux● Adjustments B
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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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