Hi
@pma
This is excellent. What you've done is
exactly what I wanted to happen when I posted it - i.e. someone take it, model it, suggest improvements based on analysis (not subjectivism) which is in keeping with the ethos of this site. Spot on.
Thanks for sharing back, it's appreciated. For me it's just me trying to breath some life into a childhood hobby anyway so I don't feel protective over the work I've done. I just want to catchup lost time and learn something.
My circuit separated out the signal-gnd from the power-gnd, whereas you've merged. Will it be ok? I guess it depends on your overall earthing arrangement. There would be hum in the Luxman.
I like the addition of the DC servo. I've not got any DC offset problem so left as is.
Re your previous post using two pairs of o/p bjt, I'd be tempted to move to SMT if I do another version, so I could squeeze more on including the DC servo....now look what you've done