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basnas
03-09-2011, 11:39
Hi

I will try some other valve in the regulated section. (ecc83)

Is this Full Music 12AX7 good, The Mullard cv4004 is very hard to find.

Best Jan

worrasf
03-09-2011, 12:57
Jan

I have tried many different valves in my Croft 25R including NOS Telefunken, Brimar, Mullard, Philips Miniwatt, EI and for me the finest by far have been NOS RCA 12AX7A (7025). I have a couple of matched pairs if you are interested. I can also highly recommend GE A2900 or Brimar 6060 Yellow T instead of the ECC81 in the gain stage - I have a few Brimar Yellow T's left as well.

Steve

basnas
03-09-2011, 17:54
Hi Steve
My Croft use in the line stage ecc83 or 12bh7a. Not ecc81.

Is the RCA ecc83 (7025) sounding dark ?

best jan

worrasf
03-09-2011, 18:05
Is the RCA ecc83 (7025) sounding dark ?

best jan

Not at all dark - sort of a mixture of the best attributes of a Mullard ECC83 and TFK 12AX7 without the (for me) overly warm Mullard and overly bright TFK - perfect in my setup.

Steve

basnas
04-09-2011, 12:42
Hi Steve
What valve are you use in the regulated, the regulated valve make also a very big differents.

best jan

worrasf
04-09-2011, 12:59
Hi Steve
What valve are you use in the regulated, the regulated valve make also a very big differents.

best jan

I use a pair of RCA 12AX7's -same as in phono stage

Steve