I found a nice +/-12V +5V transformer I'm using for a project that has some logic circuits and relays. Not the cheapest way but since relays are pretty hungry it was the best way by far.

Found the link to a good article on ferrites as noise suppressors http://www.elmac.co.uk/ferrite.htm

Just to complete the above answers: Common mode chokes lets even high frequency signals through. A pair of wires carrying a signal results in a net magnetic field of zero as the signal travels both ways. An outside disturbance only travels in one direction through the choke. There's a...

Drill many small holes and clean it up with a small file. You can get a set of files for less than USD10.

Always have digital volume controls maxed out! By using the digital volume control you decrease the resolution and dynamics of the signal. The noise, as AdamZuf has mentioned, will be amplified more as well. The more you amplify the signal in the poweramp the more you amplify the noise.

Quote: Originally posted by Adso I think it is important to note here that (I think) Chipko meant to state that these items are listed in order from LEAST important to MOST important. Northbridge cooling is a last fraction of a percent kind of tweak, a lot of people think this doesn't...

Problem with getting a silent computer in Europe is cost, most notably fans since Panaflo's aren't available here. But in order of importance: Passively cooled northbridge, Zalman has a few to choose from, around 6€ or so. Passively cooled graphics card, again Zalman, heatpipe solutions...

Yeah front panel express and their european counter part are really nice to deal with. I had this made: Opted not to countersink the volume knob since I wasn't sure about how good the tolerances would be but I regret it now. The paper thing will be replaced with a back lit film so I...

Quote: Originally posted by dokebi Would wearing rubber gloves protect the person from such accidents? Not the kind you have to keep your hands dry when you do the dishes. Famous last words: No need to unplug, it will just take a few seconds.

A 300W stepdown transformer can be had for about 400SEK here in sweden from www.kjell.com so it's probably the cheapest route.

ATX Powersupplies all deliver -12V and -5V with enough oomph to drive an amp. Get a common mode choke on the cables supplying your amp to get rid of some of the noise.

Quote: DC only means the voltage does not alternate polarity, it doesn't mean the voltage remains constant over time. So an AC voltage becomes a DC voltage if you move the ground reference below the lowest point of the original AC voltage? Better to divide all voltage in to a DC...

http://www.elfa.se/elfa/produkter/en/2012847.htm Not exactly what you wanted but with the cunning use of [ctrl]+[F] it will work like you want.

Got plugs and cable from Maplin in the UK. The connectors were £1.99 each and the cable £1.99 per meter. It's 8mm in diameter and pearlescent white which doesn't photograph very well but it looks very good in real life.

Good news is you can pick up a cheap smoke detector for the overcharge detection