I blew the tubes on my V4B so I need new ones. I read all about 7027A and how the new ones are not so good. Also about how good the 7581A are for this amp but almost imposible to get and expensive.
Finally I was deciding on 6L6 winged C until I came across this site: https://www.watfordvalves.com
They claim to have 7027A as good as the original ones and also they carry 7581A that are as good as the discontinued ones
Does anybody can give me any input?