I purchased these to try them out in my Line Magnetic 508ia amplifier. They are comparable to the regular 6SN7 Tung-Sol Black Glass Round Plates, which I also have. I have decided not to over-hoard tubes and I'm clearing most of my stash.
These are hard to come by tubes, and I am asking $450 for the pair. I will include the Woo Audio 6F8G-->6SN7 adpators ($160 retail / pair) for $100 dollars more at $550. The adapters work flawlessly.
Buyer to cover shipping and PayPal fees.
Please see attached pics
