Live sound in general can be pretty terrible. High-powered but high distortion systems in often less than ideal rooms, played too loud, performed by musicians who are tired, possibly bored, and often intoxicated, doesn’t usually add up to the best sound quality. Of course, there are exceptions in certain music genres (classical, opera, some acoustic genres, etc.), but the above is the norm for most modern music. The appeal of live music is the overall experience, seeing the artist in person, enjoying the energy of the crowd, etc., not sound quality.