I've got to throw my 2 cents into this forum. I'm relatively new to audiophilia but have jmped in with both feet. I want to give a major thumbs up to Running Springs Conditioners. I have a pretty revealing system (MBL transport, Boulder pre, Boulder 2060 poweramp, and wilson Maxx2) which I arrived at somewhat gradually (some would argue that!!). I made one (at least) rookie mistake after reading a glowing review of Shunyata Hydra 8 and power cords in TAS, by letting a dealer I no longer will speak to, convince me to buy a Hydra and a full array of power cords for my power amps (at the time BAT VK 150 monos). I have since learned that power conditioners on power amps is an iffy proposition. I have never been more disappointed. I had just gotten the hard sell and shelled out 8 grand and my system immediately and permanently sounded worse. I tried to use the power cords and hydra on the front end to salvage my investment but I found they were wthout question colored. They definitely changed the sound, but I wouldn't say it was better, just different.
A dealer I trust recommended I try running springs. I ordered a Harley from the cable company and the second I plugged it in...WOW! Soundstage explosion, everything better with no discernable weaknesses. Had I gotten that conditioner earlier I probably would have saved alot of money. I have since added 5 dedicated 20A circuits with PS audio outlets, upgraded front end and added a major league amp. If you pressed me I would have to say the RSA was the single biggest incremental leap in performance in my system. That's saying lot with a new $40,000 amp. (One might question my sanity/or intelligence:o). I have a Jaco on the front end, and Dukes on my power amp and Sub. I have only been using the Duke on the amp for a couple of weeks, so I don't have a final verdict. What I can tell so far is that it definitely is either unchanged or slightly improved. The boulder 2060 is a monster, but so far no compression of dynamics. So I recommend giving RSA a try. I can't say I can notice a difference between the Jaco and the Harley, thus for around $2k or less you can get a major (I hope for you) improvement in our system.
Good Luck
PS all my comments are IMS and IMHO