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Everything looks & sounds like new:Output Power (EIAJ Standard): 70W per channel at 6Ω in normal mode; 150W + 150W in BTL mode 1.Input Sensitivity / Impedance:380mV/50kΩ (normal), 300mV/50kΩ (BTL)Frequency Response: 5 Hz – 200 kHz ±3 dBSignal-to-Noise Ratio: 90 dB, indicating low background noise 1.Power Consumption: 195W at 100V AC, 50/60 HzThis amplifier uses a Super Legato Linear system in the output stage to reduce crossover and switching distortion, providing clear and natural sound quality 1. Users can adjust input level controls individually for each channel, giving precise control over the audio signal 1.Physical and Operational FeaturesDimensions: Width 470 mm × Height 135 mm × Depth 370 mm (430 mm width with side wood removed)Weight: 10 kgThe amplifier supports standard speaker loads ranging from 6 Ω to 16 Ω 1.Indicators and Switches: Normal/BTL switch, channel operation switches, and operational LED indicators
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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.
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