I don't have a super bass but I have a JCM800 1959 super lead from 1981. Has the 2 channels and 4 inputs. A friend of mine modded it to have a master volume and 2 gains with one channel having and extra gain section based on a Bognor Ubershall and the other (clean) is the SL, it sounds fantastic with mt bass through an 8x10 and with my guitar through a 4x12. Such good heads.