Thanks
It took about 2 months to get all the parts and build the unit, getting all the parts seemed to be the biggest stumbling block. I tested each unit before it was cased off a couple of surplus psu's, to try out each channel. The first channel worked straight off but i noticed the level kept going up and down, which turned out the chips weren't pushed fully home in their sockets i think i was frightened of breaking them. Every part was checked and double checked, resistors with an ohm meter. I made a simple jig to hold the resistors in the pcb with a piece of wood and foam and two rubber bands. Second channel worked in a fashion and i isolated the problem down to one band which had a short on the print. Great project thanks to Jacob, i haven't the patience to sit down and design that pcb it must have taken quite a while. Well if i can build something like this with not much experience i'm sure with patience most people can.
Vikki(uk) :grin: