+ 1 pindac’s observation re: the simplicity of adding low eddy solid copper (or silver!) RCA chassis sockets and cable plugs to give notably greater clarity, openness and purity of sound. (I use ETI silver and gold in different positions in the system with notably satisfying results. Of course there are other producers too. I recommend NOT mixing manufacturers of sockets and plugs. I encountered a potentially catastrophic grounding issue with WBT sockets and ETI plugs ).

You might like to web search "Abbas Audio RIAA Tube Preamplifier EF86 / EL84" and also read his "Philosophy" page. I have one of his DACs, two of his phono stages, and have commissioned a third. There is a cadre of highly satisfied customers around the world. Good luck with your search.

Abbas shares similar origins and design intentions, that are similar to both my own DAC and Phonostage.

Careful selection of Parts, where as the outcome there is a truthfulness brought to mind when heard working within the circuit and closeness of the match for parts is the goal for the designs.  

Either of these being experienced in use by myself or others who have heard them in a variety of systems are always making it known of the good impression that has been made.  

I appreciate the continued interest in the topic.  Many great ideas and perspectives.  Having done some additional research, I am intrigued by the Greek-designed Lab12 Melto2 tube phono stage.  The circuit design/PCB layout and accompanying components appear impressive.  If anyone has experience using this equipment, please share your thoughts.  There have been many resales over the past year - not sure if that denotes a pattern/trend or simply individuals testing new products and moving on to other priorities.

If the Vendors of the Lab 12 Phon' are actual enthusiasts who bought into the design, it is hard to suggest the circumstances for selling without inquiring.

Usually a Phon' that has proven to the individual using it to be an end game model, does not get put on sale, and circumstances not related to audio may be the reason for needing the sale to happen.

Freidrich Shaefer's ASR Basis Exclusive HV battery powered phono preamp.