Seeking a Warm 12AX7 Tube for Preamp


Hi All-

 

I got hold of a newer tube preamp. I bought some match ed JJ 12AX7 tubed and after they burned in for a bit, they sound very strident and bright. Can anyone recommend  a tube brand that will be warmer in the upper mid and high frequencies? I can't afford NOS. I'd like to keep it under $100 for the pair matched. Viva Tubes has the new Mullard reissues, PSVane Art Series, Electro Harmonix Gold Pins, and Tung Sol Gold Pins in their new stock that are matched. Any suggestions?

 

Thanks 

128x128spacecadet65

Should have said a pair of used Mullards are under $100 where I buy most of my tubes. He also warranty’s them. I bought a quad of used Mullard el34’s xf2’s from him almost ten years ago and played the hell out of them still pull them out every once in a while and they play well. I think he still sells a used quad of Mullard xf2’sel34’s that test high for under $400 or right at it. There not all going to be labeled the same. So good deals can be found. There are a lot of awesome tube dealers but they cost a premium and even there NOS tubes will red plate, never bought eBay tubes. 

I've got an assortment of 12ax7's and my suggestion for warmth would be NOS Mullard (IEC variety are less), Brimar (can be bought from Langrex in the UK for  a reasonable price), or if new issue the Gold Lion B749.  The reissue Mullards didn't do it for me.  I have used NOS Amperex as well and they tend to be a little more bright and detailed. I'll also second the NOS Matsushita made with the Mullard tooling. These are very good and  should fit in your budget.  I would try to stretch the budget a little bit because under $ 150.00 opens up a lot of options. 

@trivema I think you might be on to something with the "too much gain" comment. I have noticed that I'm at 90dB spl with the volume control at only 9 o'clock. I found some used GE 5751 that I ordered from an eBay seller with a good reputation. He says they are tested, both sonically (matched) and electrically and are well within spec. Thanks for the tip @mulveling!

Just as a backup, I also bought some new Mullard Reissued 12AX7. So I'll have some things to try out and see if this beast can be tamed on the top end. 

I have to really thank everyone for all of the suggestions. I've read them all. And even if I haven't mentioned here, I have more options from your thoughts and thank everyone for taking the time. I'll have the tubes in this weekend and will post an update after I have some time to burn them in. 

 

G