Interesting. Thanks. As I think about it, it's really an analog SS amp issue that I've noticed. My JC40 is brilliant, sounds brilliant, brilliant dynamics. It would be all I need, BUT it is more resistant to feedback and I do use that a fair bit in our sound. But, my Roland Cube amps, which I assume are digital, seem to feedback more readily. My Cube X and Cube XL both do it at even reasonable/low band volumes. And even my MicroCube will do it a bit at talking volume on the right model. The engineers at Roland are both smart, practical and I bet they just designed that characteristic in to the models, to mimic how and when the tube counterpart would feedback musically? I've long thought Roland/Boss must have actual players/musicians in their design teams and process. Because they always seem to tune their stuff to stage and to nail what matters there. For me anyway. As an aside, to me this whole discussion is academic. I prefer the JC40 and to be honest my Cubes (which I got mint for right around $200 each) over just about any tube amp I've ever played. Only my 80s JCM800 112 combo tops them. And if I'm honest, it's not by much. Of course, it has nostalgia and fun factor. And it sounds amazing. The JCM is what I use for rehearsal almost exclusively. But if/when shows resume, I'll inevitably grab a Cube or the JC. The JCM weighs close to 60lbs and the transformers are so heavy it's quite unbalanced to carry. I can still do it. But when shows are going we often play small places with tricky load in/out. It has a great MV so I can get great sounds at any volume. But the JC and Cube are so good. And I don't really care if anything happens to them. And they are easy, easy lifts with balanced weight. Plus they (especially the Cubes) are so freaking loud I never have to worry under any circumstances about having less headroom than I would prefer. So to the OP, if I were me (and I am) I'd find a Cube X or XL and give that a whirl. All the models are really good. To me the secret if you like blues to rock tones is to go to the Classic Stack model, turn the Gain to 8-11 o'clock and then set the master to your desired level. And turn the Mids up well past 1/2. Super dynamic, edge of breakup to classic rock with the right hand/guitar volume. I think if more people explored the models and played with varying Gain levels and EQ settings, more people would fall in love with them. Or maybe not. Ha!