 I'm just going to talk about the clean channel specifically on these amplifiers because it's got some quite unique features. When you switch from one voice to another it isn't just some subtle EQ that is going on. The whole of the actual tone stack is being shifted from earlier on in the signal chain which it does on the more American sound which means that it actually attenuates your signal and also prevents much overdrive and then when you switch to the voice to then it shifts the whole of the tone stack further on in the signal path so it's after the valves which allows the valves to overdrive a bit more and it also shapes then the tone of the overdrive more so it's a completely different way of processing the signal just within the actual clean channel itself. In addition to that there are changes going on in the power amp as well to do with the negative feedback to more closely simulate the tones we're trying to achieve.