12AT7 in V1 V2?

[DaveSwenson]

I'm thinking about putting a couple of MULLARD 12AT7 / CV4024 in the V1 and V2 spots. Has anyone tried this combo? If you were only going to do one, which spot would you pick?

I've got a LSC v2. Built in 12/09 with the stock Mesa Tubes.

Thanks,
Swen

 

[moonroom]

It depends on what you're after. AT7's (especially in V1 AND V2) will really reduce the available gain compared to the stock Chinese AX7's; maybe more than you want. That said, tweaking is its own reward.

FWIW, I popped in some vintage (not NOS) RCA 12AX7's after I bought my LSS. The difference in controllable gain was pretty striking. With a Chinese AX7 in V1, I couldn't do much more than roll off a little hair when I dialed down on my guitar's volume knob. With all the non-Chinese AX7's I tried, I ended up with about 6 tonal shades between 1 and 10 on the guitar volume. The difference isn't in tone so much as usability. YMMV.

 

[geddyentwistle]

12at7 in v1... yes..LSS and dual rec

for me, it makes high gain less grainy... with plenty of gain with the change... also favor greenbacks