Seeking power conditioner recommendations / hum elimination


So, my set-up:
DALI Grand Coupe bookshelf speakers on B&W stands
Proceed by Mark Levinson AMP2 (Gutwire cord)
Krell KSL Pre-Amp (Clarus cord)
Marantz SA8004 SACD Player
Jolida JD9 Tubed Phono Stage
Rega Planar 2 with Ortofon MC3 Turbo (I’m just getting into vinyl again)
Bluesound Node 2i
All Kimber Kable PBJ Interconnects
Dedicated 20 AMP line with a Pangea recepticle

(BTW, my whole system ran me less than $5K, bought most of it from a good friend who upgraded to McIntosh gear/Klipsch Heritage Speakers).

I have a mild hum originating from the AMP2 that I can’t seem to eliminate. I currently have that iFi white cylinder dealie plugged into the open socket on my outlet, which did improve overall sound a tad but did not kill the hum. I’m admittedly using a consumer grade Monster Power block-style strip that I really should have replaced a long time ago. I’m considering a PS Audio Dectet, Audioquest Niagara 1200, something Furman, or something pre-owned between $1 and 2K. Are the options I listed appropriate for my gear level or should I really be going with more high-end options? Do I stop-gap with something inexpensive until I’m ready to buy my "real" unit?
Appreciate the feedback!
atticus-xi
It's extremely unlikely that anything in that price range will deal with the hum.  In fact, it's possible no after-market product will eliminate the hum.  The first thing to do is to discover exactly where it's coming from and what it causing it.  There are two basic causes and other possible ones.  I recommend you search "hum" and "buzz" on pre-existing threads.  You will find lots of references.  Some people go to heroic lengths to eliminate hum and never achieve it.  Sorry: reality-check.
I’ve NEVER had noise that wasn’t fixable. It’s usually routing.
Cables too close to each other.

PC are a big source of noise to close to IC, ground loops,
 and NOT sharing a common power outlet.

I add a maintainer, cleaner, for just that.
Maintain 120 and clean it up a bit.
HF issues for me, with dirty VAC.. Ear bleeding, BOIL..

I fix the noise first WITHOUT a conditioner attached.

My 2 pennies...

Regards
I have a mild hum originating from the AMP2 that I can’t seem to eliminate.

Wait, you mean it's physically humming, or you have diagnosed it to be the amp by disconnecting everything else?