How about a 50L6 amp? Any recommendations?

[SteveJones]

So, I've got some 50L6s and some 35Z5s. I've also got an isolation transformer that with 117V on the primary has a secondary that supplies 115V @ .24A with a tap providing 6.3V @ .8A.

Given that 6.3V tap, can anyone point me in the direction of a SE 50L6 circuit that might be interesting to build? Was looking at the Lectrolab R200, but was wondering if there was something that used a 12AX7 or two out there?

Thanks for any help or opinions...

Steve