"white noise" from the speakers

[synsei]

Absolutely agree I am dreaming about owning my own mancave thoough - with dedicated power lines and so on and on. Living in a very old building can be incredibly frustrating - you should hear transformers in my power amp when my flatmate is using her hair dryer

Sounds to me as if you are in dire need of some mains conditioning or regeneration equipment, there's plenty of info about this on the forum in various threads. Below are a couple of examples to get you started

http://theartofsound.net/forum/showt...ns+conditioner

http://theartofsound.net/forum/showt...ns+conditioner

[istari_knight]

Aye, sounds like DC on the mains... Hairdryers are a PITA for that ! http://www.hificollective.co.uk/comp...dcblokker.html or for big amps http://www.lcaudio.com/index.php?page=316