Hi Mike
Did you find the time to listen some more and can elaborate more about your findings?
What output voltage does your GG now have for the KR242?
Have you also tried other recti tubes, other than the Tak274b?
Cheers,
Christoph
hi Christoph,
I'm trying to read the 'dac test report' dated 12-15-2016 that came with the dac to answer your question.
on the front page top it says;
Tubes (music) 45/101d/242/300b
on the back page;
#26. voltage on C1--253
#27. voltage on C2--245
it also says
#32. voltage on music tube heaters---4.2 (242)
if you can point me to a particular thing I'm happy to relate it.
as far as results so far.......there are so many variables in terms of ways to set up the GG and the SGM that it's taking time for me to sort through the various set-ups to judge what is doing what.
overall I'm very happy with what I'm hearing. but there is a lot to take in.....and I'm just at the beginning. and there is breakin also to consider.
first off, we have 2 dacs (pushing in the front button selects the 512 dsd only dac); the (upgraded to from 256dsd) 512dsd old type Fikus converter, and now also the RTR dac which also does dsd up to Quad. and then I have HQ Player which can up-sample all PCM to 512dsd, or upsample all dsd to dxd352. I can have the RTR dac read both pcm and dsd and out both natively, or output just pcm or just dsd. I can set HQ Player to be native, or just output PCM or just output SDM.
I'm trying to get my bearings with each set of variables.
and it's the Holidays so my time has been pulled away from this task.
I'd say the only conclusion so far is that the new RTR dac is very very good in PCM......and overall things are two or three steps forward from the old 'quad dsd' only configuration.
I do have 2 other rectifiers besides the Tak 274b; the Emission Labs 5U4G that came with the GG originally, and a 1944 vintage 5R4GY RCA. the Tak is better than either of those with greater texture, authority and dynamics, and personally I prefer the RCA to the Emission Labs for it's greater clarity in the context of my particular system. but both are good.