The two major things that the TAD tubes had that the GT did not: 1) more clean headroom & 2) fuller bottom end. Groove tubes broke up quicker and sounded thinner.
Im restoring a USA made Blues Junior right now. got the MOD reverb tank, buncha new screws/knobs. This is a very loud amp for its size, competes with a drumset. The only thing is, even with the highest possible gain setting, it just has no balls. The attack it has is so limp-wristed, I can bash on my strings and this thing is just squishy and weak. I'd love to see it hot-rodded somehow. I'm not a fan of getting distortion from pedals at all, I feel that should always come from the amp itself.
The two major things that the TAD tubes had that the GT did not: 1) more clean headroom & 2) fuller bottom end. Groove tubes broke up quicker and sounded thinner.
I agree, the TAD tubes were a tad bit warmer on the low end, and it sounded like the GT were brighter actually
Im restoring a USA made Blues Junior right now. got the MOD reverb tank, buncha new screws/knobs. This is a very loud amp for its size, competes with a drumset. The only thing is, even with the highest possible gain setting, it just has no balls. The attack it has is so limp-wristed, I can bash on my strings and this thing is just squishy and weak. I'd love to see it hot-rodded somehow. I'm not a fan of getting distortion from pedals at all, I feel that should always come from the amp itself.
I believe new tubes have a break in period. Let them burn a couple of hours before drawing any conclusions.
I’ve had them in for months now… same results.