Where is the weakest link?

no one has created a nice high end stereo tube fit that is convenient and is a true ht bypass.

I believe Rogue, VAC, and Backert make tube pres that may work in bypass mode without tubes glowing so might be worth checking out. 

Anyway, in my system I get the biggest impact from interconnects closer to the source.  I’d start with an Optical Rendu from router to streamer, then I’d replace the Monster with an Acoustic Zen Silver Reference interconnect (balanced if possible) as it’ll preserve all the detail/dimensionality of your DAC without adding etch or bleaching tonality.  I think those two changes will make very meaningful improvements to start.  Hope this helps, and best of luck in your search.  

Thanks soix

No mention about speaker cable?

transparent for use as rca interconnects?

Optical rendu intriguing but another layer?

Talk the Electric Company into putting a transformer on the pole that your house wiring feeds off.  20+ years ago, the local electric company added a transformer on the pole across the street from my house and my wire to my home was connected right after the transformer.  Since then, I get a constant 124 volts from my outlets and all my systems since then sounded much better.  Prior to that my house voltage was always between 117 volts and 120. 

Here’is my opinion…
If you would upgrade one connection only it would be between preamp and amp. There is a huge difference between monster RCA interconnects and a good pair like Acoustic Zen Matrix Ref 2. I can vouch for that, I tested this in my system. You can hear it. Doesn’t have to be AZ you can try different cables. Next in line would be a DAC to Preamp interconnects followed by a power cord upgrade on DAC, preamp and amp. Polish all that off by a speaker cable upgrade.  

audphile1

Fascinating, you lean to doing interconnects as more important vs amp to speaker cable, which i thought would be the most important.