Wow - absolutely amazing looking. Congratulations to both of you. You must be beyond excited! The brushed cupper with the color scheme is super nice
Dave - would you mind detailing out hook up wire choices and connectors to someone like me who is trying to learn.
For power and ground wiring I used surplus mil-spec wire, stranded silver plated copper in teflon insulation. At the IEC I used Furutech push-connectors and at the power switch and relay I used ring terminals. Mostly 18g but for ground I doubled it and used 12g for the IEC>ground and for IEC > Power switch. Used 18g and ring terminals for the 6V/12V switch.
For signal wiring I used scraps of my OCC silver/gold wire and UPOCC silver for input #1. For #2 and #3 I used UPOCC copper scraps. Out to the LDR used more OCC silver/gold/UPOCC silver scraps and for LDR>Buffer and Buffer>Outs I used lengths of my D4 interconnect cable which use the same wire... OCC silver/gold and UPOCC silver.
Lots of folks would use more stuff to organize wire like terminal strips to hook up the power trafos. I just connected most of the leads directly, for me it really doesn't take much more effort to solder/unsolder wires from the PCBs if needed, it's quick and easy but I've done a lot of soldering.
SS, the USB port is only for potential firmware updates for the Tortuga LDR board, there is no DAC or anything. I don't have a diagram, it's too simple to require one... The signal goes from RCA In > Input switching board > LDR board > Tube Buffer > RCA Outs.