Plenty of simple things to do:
1) with the modifications already performed was an AC filter choke added to any component?
2) the CV181 tubes are nice tubes but I would try something different. I swapped mine out for tung-sol 6SN7 black glass round plates (expensive now) and then I just converted the preamp to use 6SL7 since the tung-sol 6SL7 tubes are cheaper - requires changing the bias settings. 6SL7s have a higher gain so a little more punch and dynamics are added. Same for the electro tubes try something different there also.
3) Since you are using copper V-Caps try the Audio Note non-magnetic resistors copper or silver or even the basic Audio Note resistors (see parts connexion website). Just updating a few in critical places can add more clarity, bigger soundstage, and more dynamics with cleaner/clarity.
Last - I would rather see you update the phono stage then the TT. Since I build components, my TT is a el cheapo JC Penny! It was actually made by CEC back in the day. People are floored by the sound but that is because the phono is reference quality.
Happy Listening.
1) with the modifications already performed was an AC filter choke added to any component?
2) the CV181 tubes are nice tubes but I would try something different. I swapped mine out for tung-sol 6SN7 black glass round plates (expensive now) and then I just converted the preamp to use 6SL7 since the tung-sol 6SL7 tubes are cheaper - requires changing the bias settings. 6SL7s have a higher gain so a little more punch and dynamics are added. Same for the electro tubes try something different there also.
3) Since you are using copper V-Caps try the Audio Note non-magnetic resistors copper or silver or even the basic Audio Note resistors (see parts connexion website). Just updating a few in critical places can add more clarity, bigger soundstage, and more dynamics with cleaner/clarity.
Last - I would rather see you update the phono stage then the TT. Since I build components, my TT is a el cheapo JC Penny! It was actually made by CEC back in the day. People are floored by the sound but that is because the phono is reference quality.
Happy Listening.