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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

Showing 3 responses by oldhvymec

oldhvymec
5,101 posts
 
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
oldhvymec
5,101 posts
 
The noise is coming from the speakers, not a piece of equipment?

60hz or 120hz, one is cable routing and so it the other, kinda.

For a test, remove the ground with a cheater plug.  If it goes away...

Hook ground between equipment.
    
60hz stuff usually YoYo's, moving the cables raises and lowers the noise floor.

Again usually routing, sometimes a voltage difference.. The ground wire will tell you that.. Couple of test leads, hook between equipment. 15 minutes, you aught to be able to fix it...

If wires aren't touching, they usually don't make noise. But terminal ends can get noisy too, plug and unplug, to clean.. Normally though it's intermittent. 

You'll get it..

Regards
oldhvymec
5,101 posts
 
 I have noticed that I can increase/decrease the hum by moving cables around, but it never quite disappears. I tried a cheater and the hum remained.

Now zero in where that happens. Spread the wires apart in that area.

Cross at a 90 if you have to cross, and keep distance between all cables shielded or not.  

It sure sounds like classic routing issue to me...Easy peasy...

Regards
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