Seriously it takes time to learn the jsx, I have 6l6's in mine by the way. I could never get a 5150 lead tone I liked, and whenever I came close the rythm was sent to shit. It's just not how I fly, the JSX has both in spades (and in seperate channels) with an amazing clean, so I jumped on a good deal. I have 5150/5150II at my disposal, but leave them mostly disposed
Really, you have to run the knobs and the fx loop up to get the most out of it, fxloop on and full, eq past 5 (6/6/6 sounds really good, 7/7/7 5150esque) and know the difference between the two inputs. I didn't try this on the stock tubes, I had a massively scooped sound to get rid of some of the mids I hated from the stock JJ El34's. Winged-C el34's would be a different story completely! And ironically I use more gain on my x2n-laden and dimebucker guitars then my sh6, just to show how they relate to the amp differently.
All in all, horses for courses, just some info to anyone wanting to try one out!
Really, you have to run the knobs and the fx loop up to get the most out of it, fxloop on and full, eq past 5 (6/6/6 sounds really good, 7/7/7 5150esque) and know the difference between the two inputs. I didn't try this on the stock tubes, I had a massively scooped sound to get rid of some of the mids I hated from the stock JJ El34's. Winged-C el34's would be a different story completely! And ironically I use more gain on my x2n-laden and dimebucker guitars then my sh6, just to show how they relate to the amp differently.
All in all, horses for courses, just some info to anyone wanting to try one out!