Valvet A3.5 Block with Merlin VSM ?

So, you've concluded that tube amps only sound good with NOS tubes? My VAC amps and pre sound great with new production tubes. If you like your current amp, find a good dealer that can properly test and match tubes for you and keep experimenting with new production. You may be pleasantly surprised.

If you really want SS, call Bobby at Merlin. He can steer you in the right direction.

Hi Cruz!
I´m sure there are good new productions out there.
Unfortunately I don´t have opportunity to test free at home. I could do some tuberolling but its going to be expensive if I have to try a lot. I´m interested in EL34 and would like to limit the test to a few "good" brands.

Many thanks!
BTW, you have a very nice system.

I have to agree with Cruz as I have a VAC preamp that sounds excellent with the current production VAC tubes. In my EL34 based Shanling SP80s I have tried many different quads of current production tubes including: reissue Mullards, Tung Sol reissues, Svetlana, Genlex KT77,(all New Sensor Corporation manafactured tubes), and SED Winged C tubes manfactured by the original Svetlana corporation. The SED tubes, in my system, perform the best. Each time I removed them to try a different brand they ultimately were placed back in service. I just purchased another quad of the SEDs, well matched and tested, from Jim McShane and understand from him that the price will be increasing ~50% in the very near future, but even after the increase they will still be a price I find reasonable compared to NOS tubes. I have not tried the new Shaguang Treasure Series tubes though, and I understand they are also excellent.