I have receive an K4040. But I want to replace de EL 34. To replace better 4 x EL 34 Or 8 x EL 34?
It is possible to buy not couple EL 34 of coupled EL 34?
Is there a difference?
No need to buy expensive ‘matched’ pairs…
Due to the productions process, tubes are already very closely matched and the bias of each tube is adjusted individually.
Save the money for some good CD’s… 