jonners. Thanks for your reply. Some years ago Elektor had an article for an Up-Sampler. I got the board and sourced all the parts, but as I was fairly new to bodging, I messed up a couple of SMD's and I think I lifted the pads. I wll have to dig it out and see if I can resurrect it.

I am using 22ohm resistors and 15uf caps. Maybe the caps are a little too high in value. I tried some 2.2uf, but the 15's seem to suit it better.

Good fun this lark in it.