Is there any disadvantage to using a switching supply like this opposed to a rectified transformer supply? I could make the amp and supply very small and light with this switcher supply and also allow dual power input (battery/AC). I am just wondering if the switching supply might make hash in the output or get weird when the volume is turned up (I expect load requirements are higher then).

David

• 12V 100W switching supply

I've got a preamp that I run from a 12v wall wort which is a switching supply. Every now and again I have some issues with it and grunge.

For what it's worth. Nowhere near the expert some of the other guys are.