Don does not buy tubes from Viva.
I am not sure why my preamp does not like these tubes. Don assures me it is not the preamp. He gets the occasional bad tube. Maybe the third set of tubes will be better.🙄
I sent a note to Viva and asked them if they actually listen to them or just test them.
Are there sockets I can buy to put in-between my pre and the tube that may get a better connection, if that is an issue? I don't want to press against the PCB too hard that supports the sockets. I'll probably have to take the unit apart and give it a once over.
Dan, no hiss or noise whatsoever? Is one louder than the other? What is the efficiency of your speakers? My Wilsons are 91 db so fairly sensitive to noise.