Lots of buzz around the ultra lite Class D amps in the marketplace. Been doing my due diligence and have found much enthusiasm for the Tone Hammer, Puma, Mark Bass, GB, etc.... Undeniably, they make a lot of sense for the gigging bassist. The portability is very attractive. Question is... is there a sacrifice tonally for the convenience of the package. Do they lack girth and fullness? What, if any, are the sacrifices here? I want to believe!