Maxgain...As a "scientist" whose specialty has been the design of tests for complex military electromechanical equipment (missile guidance systems) I am really anxious to do a fair and objective evaluation. This is to satisfy MYSELF. To hell with what anyone else thinks, although it would be nice if they agree.
I would think that differences would be most clearly heard in a simple system, and my rig does not fit that description.
It is multichannel
Fronts (three MG1.6) are biamped with 3 subwoofers systems.
Each subwoofer system has two drivers, each with their own amp.
Rears are Madisound Odin speakers, driven (at the moment) by Kenwood LO7M monoblocks.
Using this equipment, and a range of other stuff (which audiophiles tend to accumulate) eg: Dynaudio speakers, B&W speakers, Adcom amps...) I can put together several straightforward stereo systems, covering a variety of equipment types. For example, we will look at digital amps as well as conventional ones. Sorry, no tubes. Each system will be compared using the cryo'd outlet and the identical non-cryo'd outlet, that I have mounted side by side in a box. I will also try to make some electrical measurements, but I don't know if my home test equipment is good enough.
I do have a second system, for HT, a Panasonic SA-XR25 digital receiver and some reasonable inwall speakers. I can easily plug this into the Cryo'd outlet and see what happens. I will try it, but I don't think that this system is good enough to resolve any small improvement.