Hi mate, greetings from Tennessee --
It's been a while since I warmed up a Gumby from stone-cold.
Seem to remember it took a couple hundred hours (8-10 days) just plugged in (no music playing) to fully stabilize.
It sounds OK out of the box, but as the analogue section reaches thermal equilibrium, the SQ improves in every way.
After that, just leave it turned on all the time.
I do think it's more an R2R thing, but I haven't had a D/S DAC in a long time.
I originally had the D/S Gungnir, then upgraded as soon as the MB upgrade launched.
That was the best $500 that I ever spent on this hobby - by a wide margin.
You realize there's no guarantee that Mike will launch the Analogue2 upgrade for the GMB.
Seems he was less than thrilled about how the Yggy A2 launch went...too bad.
In any case, the Gumby + Gen5 USB will not disappoint!
BTW, how do you like the Utopia for metal music?
I always thought the HE-6 listed in
@Johnny1982xyz post above would be the ultimate metal cans?
Happy hunting and listening!
RCB