just listening to "Ludwig Van Beethoven - Klaviersonate op. 111, c-Moll, 1. Satz Maestoso - Allegro con brio ed appass" with my modded amp and the RFT DF97 - TESLA 1L33 combo (both non standard tubes). the sound is absoluteley amazing. as additional feature of my own build tu-05 you can adjust both anode voltage and bias, the tubes are running with an anode voltage 3 volts higher and a bias of -6 volt instead of -4.5 volt.
i am tired, have to work starting tomorrow, holiday is over, but can't stop to listen.
with my original tu-05 the above mentioned combo is very spacious and highly analytical sounding, but somewhat bright, as my modded amp has a lower lowest frequency of about 20Hz and improved bass response due to the much larger output transformers, the result is not only very spacious and detailed, but analytical from top to bottom end (and not analytical in the sence of bright) sounding. have to try this setup with my t5p when i got the additional 4pin XLR jacks.
Shikada-san's tu-05 design is really outstanding.
Edited by GermanGuy - 1/12/14 at 3:28pm