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Sony TA-AV421 / ST-JX421 Integrated 220W Stereo Amplifier / Tuner - Tested
Tuner Sony 7 views

Sony TA-AV421 / ST-JX421 Integrated 220W Stereo Amplifier / Tuner - Tested

USD$75
Location
US
Seller
58longbdr
Source
eBay US
Posted
20 Aug 2026
Last seen
2d ago

RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.

Our Thoughts RADAR AI

This is a buyer’s market at the asked price: at US$75, it sits below the US$115 median and just above the US$61 25th percentile for recent comparable listings, so it reads as a solid, buyable price rather than a stretch. It is not a screaming bargain, but it is comfortably in the fair-to-good zone for a tested vintage Sony tuner/amplifier combo.

The appeal here is straightforward: these Sony integrated/tuner units are liked for easygoing, clean everyday hi-fi, decent power for normal rooms, and the convenience of an all-in-one setup. A tested example at this price is the kind of listing that rewards a buyer who wants a straightforward vintage system without chasing collector premiums; just make sure the controls are clean, the tuner locks in properly, and no accessories you need are missing.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Sony

Sony emerged from the ruins of post-World War II Japan, founded on May 7, 1946, by Masaru Ibuka and Akio Morita as Tokyo Tsushin Kogyo K.K. in Tokyo's Nihonbashi district. Starting with radio repairs and Japan's first magnetic tape recorder, the duo secured transistor licensing from Bell Labs, pioneering the TR-55 transistor radio in 1955. Renamed Sony Corporation in 1958—from the Latin "sonus" for sound—the brand symbolized Japan's ascent from cheap imitations to innovative leadership, fueled by Ibuka's engineering prowess and Morita's global marketing vision.

Sony's hi-fi legacy spans headphones, amplifiers, speakers, turntables, and DACs, alongside landmark formats like the Compact Disc in 1982 and Blu-ray. Iconic products include the Walkman for portable audio revolution and Trinitron televisions, blending consumer accessibility with cutting-edge tech. Today, offerings like the Signature Series headphones and ES amplifiers target discerning listeners seeking refined soundstaging and dynamic range.

Positioned as a mid-to-high-end powerhouse, Sony commands respect among knowledgeable buyers for blending mass-market reliability with premium performance, outpacing many pure audiophile brands in innovation and value. Far from vintage relic or niche boutique, it dominates with forward-thinking engineering, holding strong market share in headphones and streaming ecosystems.

See all Sony listings on RADAR.

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