Done a few searches and not getting quite what I am after, but if someone finds a thread, throw it my way! I've been going back and forth between these two heads for a bit now and want to get the TB opinion. Everyone loves the Little Mark II, but the lack of a pre/post DI is such a big one for me... The SA450 has the pre/post DI as well as parametric Mid controls.. Only reason I haven't gone for the SA450 yet is that "fear of the unknown" Now a whole lot of reviews on here for it, a few, but not many... I read on some other site that someone said set Flat, both of these amps sound different... which struck me as odd, since they use the same analog power source, where as the SD800 uses digital which explains the slight differences in tone. Anyone on Talkbass play through a Little Mark II and SA450 and find they sound different flat? I've played through a Little Mark II and loved the tone, but mid control +pre/post DI would make it almost too good to be true... (almost...) Thanks guys and gals.