Did some Power supply upgrades on my DAC 3.1
Replaced all old blackgate rubycon PSU caps with new low ESR Panasonic FR series caps.
Dexa regulators for the DAC stages.
Decoupling caps for buffer and I/V also replaced with panasonic FRs and NPO ceramic bypass caps installed.
With the upgrades, initial impressions are that i can hear distinct improvement in detail retrieval and much better controlled low end, noticeably faster transients.and this was already a fast source.
The caps still need to burn in. The Siemens in the LF are still burning in as well. I've got a couple of mods in mind for my LF as well.
Some new opamps are in coming and discrete buffer adapter boards to replace the BUF634s in the DAC.
The synergy with the LF of the assemblage is just pleasing all around. I really need to start pumping some high res material through this puppy.