I have the Aune T1 and the Bravo V2 (unmodified) which I drive with a Stoner Acoustics UD110 DAC. Hard to say which one I like best, if pressed I would pick the T1. total cost of both is within $10. The T1 is a trimmer package, the separate UD110 DAC and Bravo V2 amp are a bit more versatile. I have Amperex Orange Globe tubes for both (they use different tubes), I would say they are my preferred tube so far.
They both sound awesome to my mostly untutored ears. I usually listen with my Beyer DT770.
Dana....give these a try
For the AUNE - GE 6DJ8 USA or SEIMENS 6AQ8
For the BRAVO V2 (Love that little guy) - RCA Black Plate like these
Mullard 12AU7 Long plate ...amazing sound - can be pricey
or more reasonable