Dedicated line (almost)

Erik : Yes I do. Until recently, I was not aware of the 'dimmer noise problem'....and I always felt my sound was better daytime (vs the evening). I thought it was due to the internet traffic (I'm not an expert as you can see) but when I read about dimmer's noise, I understood why my sound was better daytime as the 3 dimmers on my audio line were always at say 20% when I listen music in the evening. Will look for a blocker...or a dedicated line. Thanks everybody

OP:

Well in that case I think you have your answer.  I'm lucky enough to not have that particular mix.

I also use Furman with LiFT and SMP, so I may have better than average noise rejection.  In my past life as an apartment dweller I always knew when I didn't have a Furman in line.  Good luck!

Erik

@cagma7 standard home wiring is 14 gauge. Check to make sure. In any event I would suggest running two dedicated lines, 12awg each (10awg is obviously better but harder to work with) - one for the amp alone, another for source, preamp, phono, etc.

Moving the LED dimmers to another circuit is also an option and is going to be better than your current setup. Also, replacing the old dimmers with smart dimmers and leaving it all as is…not sure it will be an improvement. The new smart switches are wifi and may introduce noise. I know this contradicts @erik_squires recommendation but just thinking out loud here…that cure can potentially be worse than the disease but @erik_squires is a knowledgeable dude, so I will defer that to him to elaborate how that can be an improvement.

@audphile1 - I don’t have the switches on the same circuit as my outlets, but generally speaking, physical and electrical noise seems reduced compared to the old school turn to dim type of switches.

Also just a lot easier to set up correctly for LEDs.

Unfortunately it’s become impossible to fully exclude RFI (radio frequency interference) due to everything from streamers to laptops and home automation, doorbells, etc. from our lives. Best we can do is try to keep the big transmitters like routers, away from analog gear and use shielded power and interconnect cables.

Like I said though, that’s my experience, which may not be the OPs!

Also, the Furman conditioners I use are good down to 3 kHz or so, which is _very_ low compared to EMI/RFI filters. It may be I suffer less due to that filtering. I know for sure it made my system sound better when I lived in apartments close to many others with elevators in the building (but, of course, not on the same circuit! :D)

My past living situation may also influence my choices.  I am 100% into using shielded power cables after my conditioner, to make sure my clean power stays clean, and shielded interconnects.  I don't necessarily recommend you spend a lot of money, just make sure they are shielded.

If the switches are off there is no current flow through that section of line giving you a dedicated line.

Whether or not dedicated lines are an advantage depends mostly on the amount of power you have to draw. Most systems will do just fine on a 15 Amp line. If you have multiple large amps that can pull more than 15 amps then a dedicated 20 amp Line makes a lot of sense.

Any noise at the breaker box is going to find its way into all the lines dedicated or not. You would have to isolate those lines that are critical or isolate the equipment distally. There are a host of devices for this purpose. I do not think there is much benefit for amplifiers more for line level and lower equipment. The most sensitive device is the phono stage. I love the way Channel D handles the problem by running the stage by battery and disconnecting the power supply when it detects a signal. After 10 minutes of no signal it reconnects the power supply. 

Digital equipment is immune to extraneous noise as far as I can tell as long as you do not involve an analog section. I have a Lynx Hilo and nothing seems to bother it.