I also have an upgraded Node, it might be worth going for the Fidelity Audio clock upgrade as for me it has delivered further improvements. That with a DAC that is supposed to have first class jitter suppression. I grabbed mine from Nye and it has both an upgraded clock and the RFI pads:
https://www.fidelityaudio.co.uk/clocking--emi--rfi-treatment-380-c.asp
The Teddydac is an excellent DAC at it’s price point, it may be worth borrowing another
one but I imagine you’d need to spend a couple
of grand to significantly better it.
Nigel, is the Innuous kit much better as I have to say mine sounds pretty darn good?