Genalex Gold Lion KT88 Quad

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Price: $200.00   

Product Description

In 1957 Marconi-Osram Valve Co. (Genalex) introduced the "King of Power Tubes", the legendary Gold Lion KT88. This tube became the heart and soul of such classics as the Dynaco Mark III, McIntosh MC275, and Marshall Major. Unfortunately, Genalex ceased tube production in the early 1980s and the Genalex Gold Lion KT88 has become very expensive and hard to find. After extensive research and engineering, New Sensor Corp. has reissued the famed Genalex Gold Lion KT88. This tube has been recreated down to the finest detail with gold plated grid wire, carbonized screen grids, and a tri-alloy clad plate structure for exceptional performance and sound quality. Each tube comes in the Factory Retail Genalex Gold Lion boxes. They will also all come with Factory Stickers featuring both Transconductance (Gm) and Current draw (Ip) readings for each tube to show "Platinum Factory Matching" of this Quad. We are a Factory authorized seller of these great tubes, so bid with confidence and own what is arguably the best sounding KT88 currently in production.

Genalex Gold Lion KT88 Quad Review

About eighteen months ago I purchased, from another vendor,two new matched, Genelux Gold Lion KT88 quad sets for my MFA-120 monoblock amps. Sonically these tubes were very good. However, over their short life, I have experienced significant reliability issues. With less than a couple hundred hours of use, the filament of one tube failed. So I ordered a matched pair of the same to replace the bad tube and saved one as a spare. At that point I had purchased ten tubes. About six months ago, another of the original set had a filament failure. I replaced it with the spare Gold Lion. A month ago I took out the KT88's and put in some older (well over a thousand hours) SED Winged C 6550 tubes I had used for many years, just to refresh what they sounded like. Today I decided to put the Gold Lion KT88's back in, and found that two tubes had white coating inside, indicative of vacuum leaks. So two more tubes from the original sets had failed. The manufacturing dates on the tubes were October 2010 and 2011. I used them for perhaps 400-500 hours since purchase. So while the sound is very good, a forty percent failure rate in a relatively short time is my experience. I cannot recommend these tubes.

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