Has anyone tried the new issue telefunken black diamond 12au7/ecc82 tubes? What about the new issue mullard? There is huge difference in pricing when compared to NOS of the same brands, so I was wondering what is one going to loose in SQ with the new issue tubes from these manufacturers.
https://www.tubedepot.com/products/telefunken-black-diamond-ecc82-12au7
https://www.tubedepot.com/products/mullard-12au7-ecc82-new-production-preamp-vacuum-tube
Cheers,
Sid
https://www.tubedepot.com/products/telefunken-black-diamond-ecc82-12au7
https://www.tubedepot.com/products/mullard-12au7-ecc82-new-production-preamp-vacuum-tube
Cheers,
Sid