I am curious to see if anyone else has tried the Kemper. I now am down to my 65 twin & AC30 and with the profiles I have now I doubt they will be around much longer. When I use a/b pedal after I have profiled my amps and start switching between the Kemper through FRFR JBL studios and the original amps it is uncanny how much it sounds exactly like my amps, that includes the fender and vox as well. I am just blown away. The only time I could tell a slight difference and I do mean slight, was when I would roll back volume to clean up the tone on the Silver Jubilee, the Kemper would clean up but not at the same point as I roll back the volume. I think the 5150 sounds better through the Kemper and frfr then the my original 5150 III 2x12. I also enjoy the way I can change different size cabinets to the point where I don't mind not having the air move when I play through cabinets. I know this is all subjective but to my ears this Kemper is a game changer for me and since I first got my Marshall in 89 my senior year in high school I don't know that I have even played through SS amp since then.