michaelwjones Posted October 28, 2021 Share Posted October 28, 2021 These are NOS KR Audio VV 302B tubes. Aqua-blue glass in a "medicine bottle" shape tubes from the early '00s. The VV302B ia a ultra-linear, low frequency, high power triode tubes capable of producing 14 watts of pure class-A power. Per KR Audio, the VV302 is somewhere between 300B and 300BXLS with a slightly lower amplification factor than a "standard" 300B tube. These tubes feature a new ribbon filament construction and the KR Enterprise exclusive patent design with 32 cathodes. The VV302B valves possess a vacuum of 10-9 Torr, a maximum grid current of 2.0 microamperes and constant emission over the life of the tube. These tubes have an ever so slightly larger base diameter; if you have a recessed tube socket you may not be able fully seat the tube. They are perfect with surface mount sockets or those with large openings. Rated a "9" only because of the shop worn box, I have never electrified the tubes. I am selling these (and a set fo Cary 300B tubes) because I have a pair of WE 300B tubes to replace my other KR Audio 300B tubes, have too many 300B tubes and want to buy a set of 'horns. $500 including shipping to you in the. lower 48. Please email any questions. Thanks. Mike Quote Link to comment Share on other sites More sharing options...
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