I bought a pair pf EH 6H30 cyro tubes for my ARC LS16MkII and have been happy with them over the stock tubes that came with the preamp, but have no idea how many hours were on the stock tubes, but the new tubes sounded better from the start and now sound amazing (331 hours)
Regards,
Jim
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It's all about the Music, but I sure like the way my gear makes it come alive!
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