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*US* BUYERS IGNORE MESSAGE ABOVE SAYING THERE IS TARIFFS FOR THE BUYER THAT IS NOT TRUE! I PREPAY ALL US BUYER TARIFFS NO TARIFFS FOR YOU TO PAY, YOU PAY IS ONLY AT CHECKOUT NO HIDDEN FEES*SpecificationsPower output: 130 watts per channel into 8Ω (stereo)Frequency response: 20Hz to 20kHzTotal harmonic distortion: 0.005%Damping factor: 150Input sensitivity: 0.16mV (MC), 2.5mV (MM), 150mV (line)Signal to noise ratio: 72dB (MC), 92dB (MM), 100dB (line)Channel separation: 70dB (MM), 65dB (line)Output: 150mV (line)Dimensions: 435 x 165 x 416mmWeight: 17kgSERVICING NOTES:• All front‑panel controls and internal switches were cleaned and lubricated with the correct DeoxIT formulations to eliminate oxidation and restore proper electrical contact.• The bias was measured and adjusted carefully to match original specifications for this model.• The protection relay was cleaned to ensure consistent, stable operation and prevent intermittent channel dropouts. Let me know if you’d like any further clarification.Elevate your audio experience with the Yamaha AX-900U Integrated Amplifier, a powerhouse that delivers a stellar 130WPC (watts per channel) performance. Impeccably designed with a full fresh service, this amplifier is a testament to superior sound quality and reliability. Its sleek black exterior is not only aesthetically pleasing but also houses an array of advanced features, including an equipped LiD power supply and ALA circuit that work in tandem to eliminate noise and deliver pure audio fidelity.Connectivity is a breeze with dual RCA inputs and outputs, allowing for easy integration into your existing home audio setup. Whether you're tuning into your favorite AM or FM radio stations or enjoying high-fidelity recordings, this Yamaha AX-900 model is engineered to enhance every auditory experience. With a single unit quantity available, seize the opportunity to elevate your acoustics without compromise.
This listing is a bit ambitious for the current market: at US$639, it sits above the US$629 75th percentile of recent US$ listings, so it’s not a bargain by the numbers. It’s not wildly out of line for a clean, desirable vintage Yamaha, but it’s priced at the top end rather than in easy-buy territory.
What keeps it interesting is the amp itself: the AX-900U is a well-regarded, muscular integrated with proper pre/main separation, strong output, and a useful MM/MC phono stage. It’s the kind of late-’80s Yamaha that still makes sense for someone wanting honest power and a clean, punchy presentation. At this price, though, I’d want clear proof of servicing, stable operation, and all controls behaving quietly before paying up.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Yamaha stands as one of the world's most storied audio manufacturers, with roots extending far beyond consumer electronics. Founded in 1887 by Torakusu Yamaha in Hamamatsu, Japan, the company began as a reed organ manufacturer before expanding into pianos and eventually becoming a comprehensive musical instrument maker. This deep heritage in acoustics and materials science would prove foundational to its later audio ventures. The company operated under its original name, Nippon Gakki Co., Ltd., until 1987, when it was renamed Yamaha Corporation in honor of its centennial.
Yamaha's entry into high-fidelity audio proved transformative for the industry itself. In 1954, the company released the Yamaha Hi-Fi Player, widely recognized as the world's first audio component to bear the "Hi-Fi" designation in its name. The company subsequently built a comprehensive product portfolio spanning amplifiers—beginning with the acclaimed A-100 in 1960—speakers, turntables, and digital audio equipment. The NS-1000 speakers, introduced in 1974 with beryllium drivers, became iconic reference monitors. Yamaha also pioneered digital audio technology, shipping the world's first CD recorder in 1988.
Today, Yamaha occupies a distinctive position as a mid-to-high-end generalist rather than a niche specialist. The brand commands respect among both casual listeners and serious audiophiles, balancing accessibility with genuine engineering credibility. Its reputation rests on six decades of consistent innovation, proven reliability, and the unique advantage of applying musical instrument expertise to audio reproduction. Vintage Yamaha components remain highly sought by collectors, while current products maintain the brand's tradition of delivering performance and durability across multiple price tiers.
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