Motown Direct Amplifier-inspired Preamp?

[thomasdf]

FWIW, this page

There's also a top of chassis pic (I've brightened it since the can cap is difficult to make out in the original) :

Interesting take on the picture, sort of new perspective ... which makes me realise this is built on a PCB ... Makes sens from a manufacturing process point of view, but it's a bit sad, IMO. A cute little design likes this screams PTP to me

 

[CJ]

Dave's circuit is looking a lot better since i took out the Neve isolation transformer i was using to drive the input, flat to 100 K with no phase shift! My circuit starts to shift at about 10 K Hz, is flat to about 20 K Hz,

the square wave problem also disappeared after removal of the offending xfmr.

overall gain with the OPT strapped for 600 ohms is about 46