RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Optimus Prime's Stereo Equipment Old School Audio - Old School Prices - Professionally Tested Product Description This Sony STR-K740P is a 5.1 channel A/V receiver featuring Digital Cinema Sound and Cinema Studio EX processing. The unit has been tested and confirmed working — it powers on, the FM tuner receives signal, and all speaker terminal outputs including Front L/R, Center, Surround L/R, and Subwoofer pre-out are functional. All analog and digital inputs including CD, MD/Tape, DVD/LD, Video 1, Video 2, and the rear-panel digital optical and coaxial inputs were verified. Remote not included. Please review all photos for details. Highlights At A Glance ✔ Fully tested and verified ✔ Good cosmetic condition with minor wear from use ✔ Free 30-day returns ✔ Fast, insured shipping Testing & Verification All five amplifier channels were tested through the speaker terminals and confirmed producing clean output. The AM/FM tuner was verified receiving stations — unit was observed displaying FM 90.10 on the front panel. All analog RCA inputs and both rear digital inputs (optical TOSLINK and coaxial) were cycled through and confirmed switching correctly, and the subwoofer pre-out was verified present and active. Shipping & Returns Fast, insured shipping from Minnesota. Free 30-day returns. Item is carefully packaged for safe delivery.
Generating expert take…
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.
