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Reflektor
Reflektor 6N23P E88CC 6922 Preamp Tube SWGP - U.S.S.R. 1971 - OTK Stamp - NOS
Reflektor 6N23P E88CC 6922 Preamp Tube SWGP - U.S.S.R. 1971 - OTK Stamp - NOS
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$42.00 USD
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Tube Overview
6N23P (Russian name: 6H23) tube is equivalent to European E88CC/6922 tubes. Designed to work in amplifiers and pulse generators, they are guaranteed to deliver high durability (at least 5,000 hours life), reliability and mechanical strength. This tube comes with the special OTK stamp, a proud statement of the highest standard in testing and the privilege of being selected by the Soviet's State Control Bureau (OTK) for export and government use. With premium quality in both build and sound, the Reflektor 6N23P's are the top choice among Soviet-made vintage tubes and also a great alternative to the expensive European E88CC's.
Sound Qualities
Like most of the Reflektor tubes (from both the 1960s and the 1970s), the 1971's have beautiful airy highs and sound very natural. They excel in sound detail and clarity, and overall tonality is warm, rich and relaxed. The sound stage produced by these tubes is spacious and holographic, very similar to the German E88CC's. They are very fast tubes, as in solid state fast and precise, but with tube liquidity and warmth. There is an immediacy to the sound, crisp and tonally dense, never etched or brittle. These are among my go-to tubes for late night movies when I switch my entire sound world to the headphone stack because you can listen to the movie sound on them for hours nonstop and don't feel fatigue at all.
Appearance & Cosmetic Condition
Beside the great sound characteristics, we treasure this tube because of its pristine condition - nearly 100% of the paint is intact, and the date code etched on glass is perfectly visible - well nothing is easier to spot than date codes on Soviet tubes - simply look for the "71" letters on the glass and the Roman number before them that stand for the month of production.
Professional Testing & Sound Evaluation
Both tubes tested NOS (100%+ nominal mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): 13,000/13,000.
Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000's rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, it's actually quite straightforward: mutual conductance directly translates to a tube's ability to amplify sound so the higher the numbers the stronger. The tube has no short or gas grid leakage.
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