Hi guys,
I've think I've found the source of the pots and knobs on the SDS9, and probably
a few other bits of Simmons kit. They were made by Cliff, who are still in
business and also appear to still be selling them. The knobs appear to be the
K85 model:
http://www.cliffuk.co.uk/products/knobs/rotary.htmI'm going to contact them and see if they are willing to help identify the pots
on my SDS9.
Cheers,
Chris