I’ve come across an amplifier which requires 17.5vdc and around 12 amps. Does anyone know of a decent psu that would work with this? Most seem to be around 12v or 24v and the bench ones only go up to 10amp unless willing to remortgage the house.

You can buy tons of 18v switch mode power supplies on Aliexpress. It will have a pot on it that you can turn down to 17.5V.

Seems a strange input voltage for an amp though, must be Chinese? lol

18v 20a https://www.ebay.com/itm/366007066463?_ ... R8rX_8fwZg

I don’t know sounds like the mean well power supply blew up from an eariler thread, what it was powering I don’t know. My guess is your best buying from a proper electronics supplier, it might of been bigclive who said it, sure other people watch his stuff, he goes into great detail about what component does what, don’t think i’ve ever found in a video before, or someone who does this, why a capacitor is there. This is only a led power supply below, shows you what things should be there, could likely be scaled up, will be useful to know for powering low power things maybe bigger things too. My own guess with this is and I don't know much about it, it might be a false economy buying a cheap one, risk damaging the amp or blowing something, unless you've got some means of testing it with a load, whether it can handle it.