XRK971, whose pocket amp I recently reviewed for Audio Primate, shares his Estudiante build at diyaudio.com here.
He had some issues with the LM317 CCSs and so I’ve decided to update the BoM to use the LM317HV (which was on the schematic but not noted specifically in the write-up). He’s currently listening with resistor loads, which will also work fine if you run out of heatsinks or space for the extra TO-220 packages.
Looks great, XRK!