ProtoDAC TDA1387 X8 project

[DRONE7]

Before I add the Lampizator tube output, I had been using the ProtoDAC with 90 ohm resistor. Sound quality was OK. However the SRPP tube output makes a huge improvement. Especially when I use separate power supply for the DAC and the Pi.

As for the Pi +5V decoupling capacitor, I am using 220uF Nichicon MUSE. I haven't got a chance to try different value yet but I will. At the moment, I am planning on a better power supply for the B+. Looks like a lot of tuning is needed for this streamer.

Will you be building one as well? Love to hear from others.

Yes, I would like to try the SRPP with a 6021 medium mu dual triode subminiature tube. This cascode JFET buffer should also be tested.

That buffer, is that in conjunction with the tube output device or in place of ? Where in the chain ProtoDAC-xxx-xxx would you place it ?