Though I am a 6L6 fanboy, I've never tried Tung-Sol 7581 new production or NOS varieties. Yeah, I now I can buy a new quad for ~$100, but thinking I have some many tubes I no longer need that perhaps someone else does as well.If you have a like new Quad of 7581 and want to sell, please PM me. I have a NIB never-used Matched Quad of Year-2004 SED 6L6GC that I bought recently that I can trade. While I might like to try NOS 7581, they are pricey and rare. If you know these tubes well and want to give be guidance on what's best, please advise and I'll appreciate that. If you have a NOS-testing original USA brand and want to trade for other nice power tubes let me know and maybe we can work something out. Whatever, I am open minded, so long as from audiophile colleagues with good feedback. Local in Philly would also be great to swap, appropriately. I've often though it would be nice to have a local swap group for trading hot GLass gear, speakers, other gear. Would'y that be fun? Or, I guess buying and selling used incessantly accomplishes same thing, so never mind, perhaps. PS: see my other ads. Thanks.
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