2. amps-preamps
  3. 1326387515

12ax7 vs 5751

hi all,
i need some advice. i`m very new to tube amplifiers and i`ve been doing some tube rolling.

i currently have a pair of grant fidelity matched psvane 12ax7t`s in my amp which sound fantastic.

what i`d like to know is which are the better tubes, 12ax7`s or 5751 tubes. i`ve been looking at forums and there are folk out there that say 5751 tubes are better than 12ax7 tubes.

can i have your thoughts on this please and also which are the good 5751`s to go for.

i really like the psvanes but if they can be bettered i`d go for it as my next line up of replacement tubes.

my amp is a yaqin mc100b. the tubes i have installed at the moment are.....
2 x psvane 12ax7t`s
2 x brimar 6sn7gty/cv1988`s
2 x sylvania 6sn7gtb`s
4 x electro harmonix kt88eh`s

many thanks in advance guys.
grayf
frogman
7,437 posts
 
****i did some extended listening yesterday evening at a much more decent sound level. i found the ge 5751`s a little too warm for my set up. all the detail is there just too warm. my amp is already on the warm side so i guess the ge`s were too much for it.**** - Grayf

I would try these:

http://www.ebay.com/itm/RAYTHEON-12AX7A-MATCHED-PAIR-BLACK-PLATE-HALO-GETR-FOR-BALDWIN-TEST-NOS-ECC83-2-/230745104890?pt=Vintage_Electronics_R2&hash=item35b97ae1fa#ht_1166wt_689

(no affiliation to seller)
mikirob
955 posts
 
Great, tube, go for it, if you don't buy, sell them to me.
mikirob
955 posts
 
Frogman, want to sell the GEs? How much?
mikirob
955 posts
 
PS, if your price is right I will pick up Agon fee. I don't quite know how to do that , but I wll find out provided either of you want to sell the Sylvania or GE.
frogman
7,437 posts
 
Mikirob, the comment about the GE's was the OP's, not mine (although I agree). I was quoting Grayf in order to explain my recommendation of the Raytheons which I think would be more to his liking. I do have a pair of GE's, but they are not for sale; sorry.
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