Not a clue at the moment. Single to dual rail converter power supply now working - means you can use a 'plug top' power adaptor which saves case space and means there's no mains voltage in the case (no stray field issues, and over enthusiastic 'chip changers' can play without killing themselves).
It seems to be stable now, but I'm still pondering using fet input op-amps for negligible DC offset instead of the bipolar ones and the associated coupling caps necessary to stop the pots being noisy. I'll probably try it.
Haven't considered casework, but that is usually the expensive bit. I'm thinking probably between £30 and £40 worth of parts, but don't hold me to it just yet!
Regarding reviews, not sure about that as my views on subjectivism are generally opposed to those who see listening to stuff as 'be all and end all' rather than measure and *then* listen, and opinions that seem to be built around their mood on the day. I've seen subjective reviews ruin the hope of otherwise excellent kit, and promote stuff which is ridiculously poor in terms of build quality and sensible engineering principles (naming no names, plastic cased, glued together equipment which tends to produce smoke as frequently as it produces music!)
But we'll see. If what I'm doing meets my expectations, I'll box it up and send it. Suffice to say, my pride would stop me from sending out shite
"Two very small men cutting steps in the roof of the world"