This is well stated. The BHC sound is very intimate and warm. Tubes will certainly alter this "to a degree" but it will still retain it's heritage regardless. I like the crack amp. It was my dedicated amp for the 6x0 for quite a while. If I'd never heard the SEX I would not have been tempted to make a change. @Hands called the crack a hot bucket of syrup or goo (can't remember exactly). I don't think it sounds quite that warm but I understand his frame of reference and his preference based on that statement. But after hearing SEX, the Crack instantly took a back seat. It's more neutral, has more finesse with fine detail and is tonally way more accurate. This is the newer 3.0 SEX with the upgrade and I don't think it's been out too long. Could be that's it's a nice improvement over past iterations. This is the first version that I've heard. Compared to the SEX the Crack is like those 90" car stereos "loudness button effect." You hit the loud button to punch everything up. More bass and treble mostly.