To Power Condition or not?


I have 6 monblock amps (balanced bidging of Belles stereo amps).
4 are OCM 200s (100 amps of current / 400 watts balanced)
2 are the new 350A (>30 amps current / 800 watts balanced)
2 Velodyne Subs.

All front end components are through a Bybee Pro Conditioner (no amps connected)

I have been using a TICE Power block - Titan for the power amps and have run out of receptacles since I added 3 new amps. (only supports 6 power cords).

Questions:
Should I add another Tice Powerblock to expand the connections?
Should I use any power conditioning on the amps?
Should I run X+ new 20 amp circuits from the main electric supply panel and direct connect the amps & subs?
How do I eliminate the 100 Hz hum (other than lifting the grounds which seems to reduce it significantly)?
harleyhawk
The only power conditioning on the amps should be PS Audio high current 20 amp Ultimate Outlets.
Do you recommend separate 2 dedicated 20A circuits from the panel (assume 2 amps per Ultimate utlet) as well or can I use 1 dedicated 20A circuits / 2 boxes with hospital grade connectors?
I would recommend 2- 20 amp dedicated circuits for the amps and 1- 20 amp dedicated circuit for your front-end components. As for wall outlets, I highly recommend PS Audio PowerPort duplex outlets. They are $49.95 retail, cheaper if you check out Audiogon or E-Bay.
Harleyhawk, I wholeheartedly agree with Timo. I CANNOT recommend the separate 20 amp lines more highly after my recent experience. I have Lamm monoblock amplifiers which have very good power supplies. I had two dedicated lines put in a number of years ago before the benefit of all that I have learned and studied (many as a result of the fine people on this forum - Bob Bundus and Subaruguru in particular on this one). Those two lines were 12 gauge Romex with no conduit or twisting of the conductors. They were used with various power conditioners over the years mainly on front end and preamps but not my amps (didn't have long enough cords to reach the amps). I recently put in four more 20 amp dedicted lines (on the same phase) of 10 gauge THHN solid core wire with the three insulated conductors twisted and placed in Greenfield conduit with Watt-A-Gate outlets (two duplexes that I had) and two ACME cryoed outlets.

I have my CDP on one, each Lamm amp on one, and my preamp on the fourth (with my subs and ESLs on the old ones). The Lamms are straight into the wall with no power conditioning.

Total cost of the lines (excluding the Wattagates) including labor - $450.

All I can say in that if I could get the kind of improvement from a $450 upgrade like this every time, I would have a whole lot more money in the bank. My system is pretty resolving and I have very good PCs and cables/interconnects on my stuff so I thought the improvement would be subtle at best. NOT! I won't go into too much detail here except to say that the bass was deeper, tighter and more articulate, the highs were clearer but less strident, the overall presentation was more resolute while less analytical and the noise floor went down so much that I finally could understand Graham Nash crystal clearly on a passage that I have never understood before.

Thus, if you want a cost effective upgrade, you should consider this as an option. Subruguru was very helpful and he sells some Belden 83802 (I believe that's the one) which I was interested in due to its ease of installation (before I decided on the 10 gauge for other reasons).

Hope this helps!