I'm not sure if this has been discussed, but has anyone upgraded the power supply of the Realiser? The stock adapter that comes with the Realiser seems mediocre at best, but then again, I'm not sure if a device like the Realiser would actually benefit from a better power supply. I'll be using the Realiser purely as a Realiser only; I will be using a separate DAC (via Realiser's optical out) and headphone amp.
People believe and hear all sorts of things, but you would be using a purely digital path, inputting digital HDMI and outputting digital (especially optical which removes any electrical connection to the upstream). What would you think would improve? Maybe if you were using the analog outputs a theoretical difference could be found.
Some purely digital devices, such as the SOtM dX-USB HD (a USB transceiver), actually benefit from a better power supply, such as its matching mBPS-d2s. I know because I've owned both and did a fair comparison: the dX-USB HD with and without the mBPS-d2s. Are you saying that there is "theoretically" no difference in using a better power supply, if there is no analog signal path?
Spec-wise, the mBPS-d2s would also be compatible with the Smyth Realiser.