I stumbled over a decription to build a hybrid amp "br398 mostube" from brinck in denmark.
in the decription there is a dual triode "EV21" but i cannot find any infor about this tube.
Any hints
in the decription there is a dual triode "EV21" but i cannot find any infor about this tube.
Any hints
The 12BH7A is electrically similar to the description but the heater wiring is different.
EV** is not a British identity type.
EV** is not a British identity type.