I currently have every input on my UR44 filled except for input #2 on the front. I would like to connect my Moog Little Phatty to it with a TRS cable, but I have an AT2020 connected to input #1, which requires phantom power.
Does the UR44 supply phantom power to TRS connections and should I avoid connecting the Moog to that input due to my need for phantom power on input 1?
Thank you for any wisdom you may offer me.
As far as I understand it, phantom power requires a balanced connection such as XLR or TRS. It seems to me that if you connect your Moog using a TRS cable to an input with Phantom Power enabled, you are putting the Moog at risk.
Personally, I wouldn’t just because that +48v is present and active.
A possible route to investigate is an external Phantom Power device. That way you could switch off the Phantom Power on the UR44 and supply it to the mic separately. I believe that the input +48v is isolated from the output of the device (so you’re not sending that +48v to the input if the UR44) but I would check the specifications of any device you consider, if you go down this route that is.
Hope that’s of some help.
Stevo… 
The Phantom power is applied over the XLR connection only and not over the TRS. Plugging the KBD into input 2 and a Mic into input 1 should pose no danger to the KBD when Phantom power is switched on. I’m not familiar with output of the Moog, but if it does not put out a balanced signal then there is no reason to use a TRS cable, a TS will do as the input is mono.
Keep an ear open though as some have mentioned having a background noise on the TS channel when Phantom power is being used, never personally had this problem and if your line signal is good you shouldn’t.