Tubes Recommendation for McIntosh Preamp

I sort of remember a thread up not all that long ago by someone bitching about the quality of the stock JJ (I think they were 12 ax7s) tubes in his Mac (I cannot remember if it was an amp or a pre).  That was making me think that Mac was putting JJ small signal tubes in from the factory.  Anyway, fwiw, not too long ago I put some JJ 6SN7s in my pre, and I don't think they sound all that bad.

Yes, most comments I read here in this forum mentioned that McIntosh uses JJ tubes in their tube components.  I actually have never heard of New Sensor mentioned by @wescoman.  

Nevertheless,  I guess McIntosh does a good job picking the right tubes for their product.  At least I hope so anyway.  😀.  Unlike Cary Audio SLP-05, I think most comments I read are negative with their stock tube made by EH.

I'm using some RCA 12ax and 7AT's not the most expensive tubes in the NOS market (I payed $25 each)but they have similar detail to the JJ stock tubes and have much better sound staging and bass control, not overly rich like some of the other NOS tube like the apprex and mullards. I have a really handy chart with sound characteristics of the 12 series tubes I'll see if I can figure out how to post it here its saved as a picture. 

Great.  Thanks @glennewdick.  

I sent you a message with my email address i’ll email it to you i can’t figure out how to post it here. Ive also put it in my system pictures for anyone else. good for all 12 series small signal tubes like the 12ax7, 12at7, 12au7, etc. chart says 12au7 but they are all similar enough the charts good for all 12 series.