sotosprince said:
I have found some info about the studio c+ mod.
http://diy-fever.com/amps/mesa-mark-iic-preamp/
Are you planning to build your own C+?? :lol: It seems you misunderstand what is required here and Im worried your going to end up modding your Quad incorrectly.
The Quad doesn't need any major alterations and/or circuit boards added, we are talking about a few minor Cap and Resistor changes. When I post the Schematics you'll see the differences between the Lead circuits but there's a little more to it. Its important for whoever is doing the work to be able to see and locate whats in front of them and then know what values they will be changing those components to, so you will require accurate schematic's of the Quad and the C+ circuits to perform the changes successfully.
Stay tuned, I'll get onto this when I can.