Well I finally got to wind up the NT all the way on 15 watts. Pretty damn loud 15 watter I must say. After using 12AX7 new production and NOS I think I have a combo I like best.
I've settled on, for now, a CV4024 AT7 along side a JAN Philips 12AX7WA. Both are NOS tubes. This is with the Sovtec EL84's. All this may change when I buy some NOS EL84's from Marty in a few days.
With these I'm getting the Vox chime and some nice overtones on mildly overdriven tones. I notice just a slight gain loss using the AT7 but better articulation when soloing I think. This is a plus on the Thick setting. There is an overdose of gain on it anyways(IMO). I'm liking the touch/feel that's there and the tone seems a bit better than with 2 12AX7's.
Even though there is a slight loss of gain, my clean boost puts that back in when I want it. So really with a click of a pedal any gap in gain per tube is filled in and more if needed.
Eventually I want to pair it up with a Greenback speaker so I may be rolling again when that happens. At any rate I'm going to start dig'n in and playing on it cause the NT does not hide anything.
Still have the NOS in the Marshall. Its gonna stay that way for awhile. It is a beast compared to the NT. So much bigger and open sounding with those 50 watts. Frigg'n love that amp! In a couple of months I'm going to try some SED winged C's in it. Haven't tried them yet and I hear such good things about them in a DSL. Gotta do it.