Icepower amps off ebay

[lilolee]

I'm intrigued by these. https://www.ebay.co.uk/itm/ICEPOWER-...e/263366824597 or https://www.ebay.co.uk/itm/ICEPOWER-...e/114123306794 if you don't fancy one from China

Apparently these don't have an input buffer. Can somebody explain the why and wherfores of this to me please.

Lee

[Beobloke]

They look to be based around ICEpower 125AXS2 modules and an input buffer will merely be a unity gain stage to modify the unit's input impedance, although I can't see a figure for this specified in the ICEPower datasheet. There's no reason to assume its any thing out of the ordinary, though, so a buffer shouldn't normally be necessary.

As an aside, neither unit appears to meet CE standards for internal wiring from what I can see, although the second one is a bit better...

[lilolee]

Thanks, I won't worry too much about it then.

It never dawns on me to check for CE. I guess case earthing and some other stuff.