Hi, guys. I would like to jump into this one if I may. I have Ultra 5's under my speakers (threaded inserts), Ultra SS on Ultra bases under my rear speakers and under both of my PS Audo P10 Power Plants. I also have Ultra Mini's under my Cable/DVR Box (yes, amazing as it seems. The HD cable picture improved immensely after doing so as did the digital audio feed), center channel speaker (due to space limitations) and under my HT reference receiver (due to space limitations). In the next month or so, I'll be purchasing another set of 4 Ultra 5's for my preamp, preamp power supply and power amp, leaving my DAC, disc drive and BD reference player for the last phase sometime next year.
Adding these under each component has been revelatory. I see (hear) why SP suggests Ultra SS'ing your speakers first so you can hear the improvements upstream components make when they are Ultra SS'd afterward. No question it was immediately and obviously apparent with each addition what has been improved upon. Easily the best investment I have made. All the improvements everyone and reviewers have mentioned have been there with no drawbacks (other than a much lighter bank account). With the level of engineering and machining involved, one can immediately see why these are so expensive, especially the Ultra 5.
Odd