I have the TMB version & it rocks!  You still have the basic channel with just volume & tone, but channel two has a master volume & the usual EQ tone controls- very useful for tone shaping.  I use mine with a simple A/B box to switch between channels for a fairly clean & lead options.  I also modded mine (fairly simple to do) with a separate effects send & return for each channel- I have an analogue echo on the lead channel & a touch of chorus on the clean- but you could insert most time- based effects here... hope that helps! effex