[JacobLTA]

Looking forward to getting a Velo sometime later this year. @JacobLTA , in this circuit which affects the overall sound signature the most - the preamp tubes or the power tubes? I've been building quite a collection of rare top-tier NOS tubes to try with this amp.

They both contribute and finding the right synergy between preamp and output is important. If you already have strong, well matched and balanced output tubes, 12AT7 rolling will have a larger impact.

Has anyone used matched Brimar/Footscray CV455s as input tubes?

(sorry if an answer was posted here & I mssed it somehow)

Excellent low noise and low microphonics tube! I like these best with KenRad 12SN7GT.