Lack of time is what always lags behind projects. Finally, the phono preamp is nearly finished. The configuration is different from the original one, in this one 4 double triodes are used instead of the original 3. The RIAA respond is based in pasive RC filtering. The final result is much better and fitted in the RIAA curved with a clean output. The SNR and final gain are not measured jet, but it sounds as a perfect preamp for MM&MC cartridges.
I have enjoyed a little bit of Jazz, Blues and Rock with some interesting tonal features, although as soon as it is integrated with the KT88 power stage, it will require some calibration based in owner's taste to empower the experience.
The power supply is in prototyping process. Hope to get it ready ASAP in order to deal with the power stage.
While working in the phono preamp, some ideas for a future guitar & bass amplifier, it is in the "must do" list.