Hi, you will find a lot of mains pollution is generated in the home off things like fridges, TV, washing machines, dishwashers and fluorescent lights.
There are a number of measures that can be taken to improve the electrical supply which is feed into our hi-fi equipment. If you are serious about getting the best out of your system, you should consider installing a dedicated power supply from your consumer unit. (if you have a fuse box this needs to be replaced!)
Circuit breakers are essential (rather than fuses) as they do not restrict the flow and demands made on the current to the transformer, which in itself is subject to reacting to supplying the bridging rectifier, followed on by the main reservoir capacitors.
DEDICATED POWER SUPPLY - A mains 'ring' or spur that supplies your hi-fi equipment and NOTHING ELSE.
CONSUMER UNIT - The box which is connected to the meter and into which all the electrical circuits in the home are connected via circuit-breakers.
The amount of work (and disruption) this entails is dependent on where your listening room is in relation to your consumer unit, what kind of consumer unit you have, whether it has the capacity to add another circuit, and how easy it will be to install the new cables.
I can say, from my own experience, that all the trouble and expense is worth it. Modifications to the electrical supply have made noticeable improvements to the sound of my hi-fi system. And remember, the final signal which drives your loudspeakers contains a higher proportion of added (mains) electricity than the original signal. So, no matter how good your equipment is, the sound will still be dependent on the quality of the power supply.
Having a dedicated mains supply is the building platform on which you can continue to provide better power to your equipment.
A dedicated mains supply will isolate your hi-fi equipment from the rest of the electrical wiring in your home which will cause electrical interference.
However, you should still make sure that the rest of the electrical system in your home is not producing any unwanted nasty effects. Make sure that the wires into each socket are secured and that the retaining screws are tightened. Check all earth wires are securely connected.
Make sure all your electrical appliances are in good working order and check that the wires in the plugs are secure and that the clamping screws are tight.
Some appliances like refrigerators produce interference when the thermostat switches the cooling system on and off.
Reading the boards I can see some people remain skeptical about these things.I would ask you all to consider this, why is it that your music sounds so much nicer in the early hours rather than other times?
I hope I have got you all thinking, why not try looking on the Internet and finding out a little more about this.