Thank you for the response!

that’s interesting, the device lights don’t turn off and it doesn’t seem to lose any power though..just it’s connection to the computer (fire face lights stay on when this happens)

I will try a new power supply

You were absolutely correct, thank you so much.

Grabbed a new power supply and it fires up

I’m assuming it is an unrelated issue but I’ve plugged in some headphones to the headphone input (that I know work), just to make sure the interface is all working and all I get from the headphone output is really quiet and distant distorted version of the sound. Turning into my worst nightmare!

I believe same sample frequency everywhere yes.

I can actually get the headphones to work but only if the 3.5mm is half way plugged into the 6.5 mm adapter (which I believe is TRS? Tip and 2 black rings)

The TRS - TRRS Adapter stuff goes a bit over my head, but it’s the same adapter I’ve used to plug headphones into a mixer I used to have so I just assumed it would work. Could it be a case of wrong adapter? I’ve tried 2 of this same style and on both I’m getting sounds only when the headphones are loosely half plugged in to the 1/4 inch adapter.  Somebody suggest I might need a “four bar” 1/4 inch adapter for the UCX..thoughts?

Thanks again for helping me out