As some of you are aware, I have been working on a mod to allow the clean/crunch modes of Channel A on the DSL 50/100 amps to be footswitched like the main channels. Well, my final boards have just arrived - just as Im going on holiday (Bad timing!). You can see some pictures below of the prototypes to give you an idea of how it goes together. The most basic installation replaces the main switch with a number of relays. This still gives a front switch but can connect to the small Jack PCB that should be mounted at the rear of the amp (normally in place of the reverb jack) to allow a footswitch to be used. If you are prepared for the work, 3 wires from the PCB can connect to the main volume pot for that channel (requiring removal and re-insertion with 1 pin bent back) allowing the crunch volume to be dropped to match the clean channel using an on board potentiometer. Heres the pics of the prototypes, note the final versions have only 3 wires to connect for the volume adjustment and can be cut off if not required. The prototype has been in my amp now (a 1998 model) for a couple of months and Im actually using the crunch channel now it great!. Before i just used the clean channel and a TS-9 for a bit of crunch but theres loads more sounds available now. I currently have a prototype winging its way over to be tried in a newer amp (2006 i think). The install is completely reversable assuming you dont throw away the old switch/reverb jack!