I'm no EE or audio expert (IT background) but here's my interpretation of the wiki data on R2R (2kg of salt as prerequisite!). It's not hard to achieve 24 or any other bit depth with R2R. That only depends on the no of resistors and the circuit topology. Problem is the accuracy of those 24bits. IIUC, the resistor accuracy and matching are the main factors there and it mostly applies to the higher order bits. You get a 24bit result no matter what resistors you use but the last X bits may or may not be correctly interpreted. Question is, how do those errors affect the sound?. And that's even harder to say. It may generate a sound coloration that is actually pleasing ... some sort of tube-like coloration. The fact that R2Rs have a known problem with the highs rolloff seems to fit well with my "explanation". And generally (another 2kg of salt here) if you err on changing 1s into 0s your sound will become thinner. If you err the other way it *may* become fuller, louder, deeper. That's only *very* generic bits theory and logic, though. And I may be talking way above my pay grade . Would be very helpful to hear something from ppl with hands on experience.