I have five systems in my house. Some will "jam", some won't. They range in sensitivity levels from 82 db's to 104 db's at 1 watt. Power levels go from 30 wpc to well over 1000+ wpc. Any of these systems can play ANY type of music that you throw at them but some will do better on specific styles than others. Each system was built with slightly different goals in mind. I did this on purpose as this only adds to my listening flexibility. There are some discs that i will only listen to on specific systems because of the "magic" that the combination seems to generate. Quite honestly, rock and roll, pop and some blues recordings are not nearly as enjoyable on a "good" system as they are on a "mid-fi" system. The system can be TOO revealing and actually detract from what you are expecting / wanting to hear. Besides that, the added bass "bloom" and slight hi frequency rise common to many "mid-fi" systems actually helps most rock recordings. There is more of a foundation or "beat" with the increased bottom end and the guitars have that extra "edge" or "bite" to put them over the edge. The added distortion by-products of the "lesser" audio gear tend to blend with the distortion that was present when the band was really playing BUT lost via the recording process. That's the reason why most "rock" recordings sounds better loud than quiet. The equipment is actually being pushed harder and coming closer to simulating the overdrive that was present in the studio or stage. After all, let's face it: Rock, pop and blues are all based on electronic instruments and amplification, i.e. guitars, bass, synthesizers, vocal effects, etc... Losing the sound of the electronics would be like removing the flavor from chocolate. Sure, it still looks the same. It just wouldn't taste the same. Sean >