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Condition is listed as unknown, which matters here: at US$335, this is above the seven-sale median of US$224 and just below the US$352 75th percentile. That makes it a fair-to-firm asking price rather than a bargain, and the lack of condition detail gives you little reason to pay near the upper end of the market.
If confirmed fully working and clean, the SI-2100 is a capable, quiet, compact power amplifier: 100 watts per channel into 8 ohms, strong 4-ohm drive, bridgeable output, trigger/music-sensing turn-on, and useful level controls. Its fanless design and sensible installation features make it especially appealing for a rack or multiroom system. At this price, insist on a powered test, clean RCA inputs and binding posts, and confirmation that the original rack ears or power lead are included; otherwise, negotiating closer to the US$224 median would be sensible.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
RCA traces its origins to 1919, when the Radio Corporation of America emerged from a U.S. government-backed reorganization of the Marconi Wireless Telegraph Company of America, prioritizing national security in radio technology. Born in the United States amid post-World War I innovation, the company lacked a single notable founder but was propelled by visionaries like David Sarnoff, who foresaw radio's mass-market potential. Its heritage spans a century of pioneering milestones, from acquiring the Victor Talking Machine Company in 1929—bringing the iconic "His Master's Voice" Nipper dog trademark—to launching early television at the 1939 New York World's Fair and shaping Nashville's recording scene through RCA Studios.
Historically a titan in consumer electronics, RCA focused on radios, phonographs like the famed Victrola, records, and later innovations such as eight-track tapes and magnetic recording. Today, under VOXX International, the brand emphasizes accessible audio-video accessories, including speakers, turntables, headphones, and portable systems, rather than specialized hi-fi components like amplifiers, DACs, or high-end cables.
RCA holds a venerable position as a vintage icon and entry-level mainstay, evoking mid-20th-century American living rooms rather than high-end audiophile pursuits. Its reputation rests on reliable, value-driven performance for everyday listeners, appealing to nostalgia seekers and budget-conscious buyers over niche boutique or collector-grade exclusivity.
See all RCA listings on RADAR.
