Tired of my El Gato Wave XLR, want something better! Recommendations please on SweetWater?

Currently I'm over my El Gato Wave XLR and it's issues. I don't use fancy things. Just a XLR Mic with Sennheiser HD660S and DT990 250 Headphones. The El Gato I bought on my own and the rest were gifts.

The El Gato can't power my headphones. It's quite annoying.

What options are out there that can? I have a SweetWater card with no utilization and I can pick up the Vocaster One from Focusrite for $1.50 a month.

What other options are there? I don't need monitoring. Just an XLR port for the Mic, and it being able to drive the headphones. Any suggestions?

I've resorted to using a Mackie 4 Way Amplifier on the headphones but I still feel like I'm leaving audio on the table.