Looking for a good dac and amp

I have a budget of 500$ and was looking to get the monoprice monolith or the schitt stack ( modius and magnius), I don’t know what else could be a good bang for buck that can run just about anything is the plan. Looking for other suggestions to be on the safe side. Looking for a small footprint if possible, appreciate it thanks.


Besides the tweaking for 6XX are there any other major differences between the signature edition and the standard Zen DAC and CAN?