Nolitan
I was told by Tim those are NOS Ei (A-frame)using Philips Holland technology. Without comparison to Telefunken/Siemens, yes they sound quite good already.
Q: V1 & V2 seems like those have to be matched. How about V3 and V4 ?
They run in constant current source circuitry in which left & right channels pass thru each tube simultaneously from V1, V2, V3 then V4(the last one).
Brand may vary in the way we want. I usually put the best matched Telefunken in V1 & V2 (the first two positions) and mix with one Siemens/Philips/Ei in either V3 or V4 to fine-tune the sound I want.
VBR
Dan
I was told by Tim those are NOS Ei (A-frame)using Philips Holland technology. Without comparison to Telefunken/Siemens, yes they sound quite good already.
Q: V1 & V2 seems like those have to be matched. How about V3 and V4 ?
They run in constant current source circuitry in which left & right channels pass thru each tube simultaneously from V1, V2, V3 then V4(the last one).
Brand may vary in the way we want. I usually put the best matched Telefunken in V1 & V2 (the first two positions) and mix with one Siemens/Philips/Ei in either V3 or V4 to fine-tune the sound I want.
VBR
Dan