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Offered is „JRC JAN CRC 5691 (=6SL7) - 1950 NOS Red Base Matched Pair -Versand aus Deutschland“ by RCA from the category „Tube-Preamp“ on audio-markt.de - the online market place for high-end. The advert with the number 7802811628 ends on 26.11.2026 at 10:13 o'clock.
€148 is on the high side for a single RCA 6SL7 unless it’s a genuinely top-tier, carefully matched, or unusually clean example. Typical used pricing for RCA 6SL7s I can benchmark spans roughly €20–€80 for most individual tubes, with premium black-plate or NOS-grade examples sometimes pushing higher, so this listing sits above the usual sweet spot.
That said, RCA 6SL7s are well loved for their rich, spacious midrange, good drive, and easy musicality in phono and preamp stages, which is why strong examples hold value. If this is a tested, quiet, strong-output tube with clear provenance and desirable vintage construction, it can still make sense for a serious system. At €148, I’d want proof of low noise, no shorts, and ideally matching/graded test data before calling it a straightforward buy.
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.
