Hello forum peoples! So I'm considering purchasing a DIGI+ for use with an ungrounded DAC, the Fiio D03K. I'm also considering upgrading to a much nicer DAC later, that is grounded. In which case, I would very much like to have the output transformer option. My question is, will the output transformer interfere with performance in any way if the DAC is ungrounded, or will the shielding simply not work? Any advice/insight you can provide is greatly appreciated. Sorry if this has already been. If so, I could not find it.