lol, theres a lot of really really nice modded RST's about, but at the same time its excellent to finally talk to someone with another standard one... who wants to keep it standard!!!!!

Is that the power amp you mean?? Thats basically a 5th speaker and you can adjust volume and balance on it (thats what the 2 knobs on the right are). Thing is it only works with Ford head units due to the lead at the back, therefore i've never been able to use it.

In early cars, you could have a graphic equiliser in the car as an option, buy with 90-spec cars like mine, the option was the power amp. I've seen one the same as mine fitted in a standard sapphire cosworth, so again, a period addition that was in the car from new