McIntosh Revel & JL

I'm going to do the dedicated circuits and receptacles.
One circuit for the amp and preamp, one circuit for the digital.
Is the Sound Applications an improvement over the Running Springs?
Do you have the amp and preamp on the SA or just your source?

The Sound Applications was an improvement over the RSA`s but at more cost. My amps are plugged directly into the wall on their own 20 amp circuit.(I have 4 20 amp dedicated circuits for the audio. My video is separate) The SA has the sources and preamp plugged into it. The SA has it`s own 20 amp circuit.

Dedicated circuits first.
Power conditioning or speaker cable upgrade second?

Do the dedicated circuits first. Use your stock cords on your McIntosh equipment, amp. preamp, and the mighty 500, all stock. Plug your sources in the line conditioner MCP1500 ;) including the pre. Keep your Kimber Kable as is.

Wpines, F1fanatic has given excellent advice. I have 501's plugged directly into dedicated 20 amp lines with stock power cords. Your are absolutely making the right move with dedicated lines, one of the biggest improvements I have ever made. I have tried tons of cables and have settled on Kimber Select for IC's, 1021's and 1016's, and Goertz MI 2's for SC. 8TC is an outstanding cable, the Goertz is better in my system, Thiels love these cables. They are the most neutral sounding cables I have tried. You have a great system...good luck with your choices!