I know exactly where you coming from, too many tubes can lead to softness or mask the true characteristics (signature) of a component. A solid state DAC can restore the delicate balance you’re seeking in your system. My advice would be to consider a DAC with onboard streamer like Lumin D2. With a 14 days return policy, I think this would a good alternative to explore and streamline your digital front end, quite possibly a step up from your modified Node :-)