leftside
Headphoneus Supremus
Ah. See you already posted Yes these are excellent. Was running them when one of my Mullards blew recently.Some guys say these 1956 Footscray (KB/FB) CV455's are extremely close to the CV4033...for less than half the price from Langrex. I haven't tried one myself.
https://www.ebay.com/itm/274128808004?hash=item3fd359a844:g:5AgAAOSwBbhg7ZkR
I have a lot of 12AT7/CV455 tubes - about 2 big boxes full. Not buying any more though - unless one dies on me. Not using the GECs any more either. Another set of tubes that have been moved to "collectors corner" due to the prices. Plenty of other good 12AT7 out there.