Hey all - I'm in the planning process for a build of Rob's 6V6 Blackvibe design. Given all the recent talk about single star grounding, I thought I'd do a bit of a faff around in DIYLC for the first time to try to incorporate some of those single bus/input jack ground thoughts. Thanks for the layout and schematic, @robrob .....bloody fabulous for DIYLC rookies like me! I plan to add the Presence and a Frondelli Master Volume. I'll use dual core coax on the MV (one going board > pot and a second one for pot > grids) and ground those shields at the pot end. I also have a switched 1meg pot so thought that might work as a push/pull bright switch on the vol/gain control. Have a look at what I have done with this layout and please comment regarding the grounding. Note I have thrown in a nominal AB763 bias circuit but haven't settled on values yet given the 50v bias secondary. Thanks for your thoughts.