Difference in sound between day and night. Help!


Hello Guys,I'm having a pretty big difference in sound quality in my system between day and night.

During day time the system sounds very very nice, but during night time it sounds superb, amazing, incredible, I dont have enough accolades.

I have the Audio-GD R8 DAC, the Audio-GD Master 1 preamp and a Nord Acoustics Class D Power Amp (wich is a hell of an amp) and I think the most sensitive to AC Power noise/problems is the R8. I also have the Wyred4Sound USB Reclocker, but as it has a dedicated Swagman Lab Linear Power Supply, so I don't think it is the problem.

I also have the Bada 5600 Power Filter, three PS Audio Noise Harvester, DH Labs Power Cables and good connectors (Wattgate) on all the different parts of the system, but it seems to be not enough to better completely the AC Power deficiencies.

As anyone experienced the same and corrected it? How?

I prefer to keep the budget under 1.500 USD, so most of the Power Regenerators offered on the market (PS Audio, etc) can't be considered. What about the Dussun X800 Pure Power Supply Regenerator? Has anyone tried it or tried any Dussun product? There are a few pretty decent reviews of Dussun products on Internet, but not much.

I cannot install a dedicated Power Line for my system, I can only use the shared AC circuit.

Thank you!
plga
Sounds about normal. Less machinery is used in the manufacturing process at night, hence lower noise floor.  If I were you, I would look into a portable nuclear reactor to wire directly to your audio system. 
You can pick up a used Elgar on eBay for anywhere from $100 - $500, and spend less than $1,000 (including r/t shipping) getting it worked over by Ralph & co. at Atma-sphere, and end up with a power conditioner that might be superior to just about any sold today. I've owned a few and love them, the only caveat being that they're too noisy to house in your rack. You want to put it in your basement by your panel, wired inline wired inline with your dedicated circuit, or right underneath your system would also work. 

Maybe Ralph will weigh in with his thoughts. 

I have one more (worked up by Atma-sphere) than I need right now, it'll end up listed for sale when I get around to it, but DM if you're interested.
I hear you, and agree with you about perceived sonic differences, but somehow think if we could record our sound day and night, then play it back, it would be identical.