I have a 410 Ampeg cab with GK MB500 and I recently purchased Shure 940 headphones. All I can say is that I ca't play through my amp when practicing anymore! The headphones sound 10x better.....but why? The sound is soooo much clearer and compressed(ish) from Headphones....Ugh Every little detail is easily picked up with HP and I use my cabinet after and I want to burn it, it sounds awful, like a little practice crap amp..haha...Am I weird?