I am looking for an equivelent for the 5Z3PAT. The plain 5Z3 is not an equivalent! The bases are different. Sovtek says that the 5U4G is an equivalent. At least it has the right base/socket configuration (octal). Be carfull with the application. I have BEZ 845 monoblocks. I got a hold of the schematic and the 5Z3PAT is being used as a slow start ciruit with a solid state rectifier. In this configuration it has no effect on the audio performance. If you have found an equivalent for the 5Z3PAT, let me know.
5Z3PAT equivalent
I just purchased a Bez 2A3 amp from China. Does anyone know if the 5Z3PAT rectifier can be replaced with a 5Z3? If so, any recommendations? There is no manual and I have not heard back from the seller. So far, the sound is quite thin out of the box, but I'd like to try some NOS tubes in it and let it break in before I form any final judgements. It DOES have a very transparent treatment of the vocals that I like, so may be worth tweaking.