Bought the Chord Qutest. Love it. Hate the power supply.

Everything about this DAC is incredible except for the dinky power supply. I wondered if others didn't like it, so I Googled it and noticed that people were upgrading and noticing a sonic difference!

I am not interested in spending much money, but I would like to replace it with something that is an improvement for my ears and my peace of mind. 

Any suggestions?>