Playing around with mercury rectifiers and a 3C24 output tube. Got to keep the dogs away as there is 450V running around there.

Tube phono with D3A => 5687 and separate power supply below. Sowter SUTs mounted on top with octal socket bases. Switches towards the back for switching between 1:10 and 1:20 as well as lifting audio ground from the chassis. LED bias showing through the ventilation holes in front (there for the CCS heat sinks). Rinke CC and AN resistors.

Built two of these with 76 =>2C22 and Khozmo dual mono attenuators. Very happy with the results!