@christianb5s4 JC1+ is bigger, fuller, faster sound with better bass.
My speakers are the Maestro Utopia III. The X260.8 are sort of sufficient for Jazz. However, if you want to listen to classical, you need JC1+ with these speakers - or spend $30k more for something more substantial - perhaps Gryphon monos - whatever they cost.
I also like the low gain (23dB) option in the JC1+. I use it in low gain, high bias mode paired with a nice tube preamp.
One note with the JC1+ - they need good power cords. With Pass Labs or with McIntosh, I did not need anything more than stock cords (or, at least, the difference between stock and premium cords was minimal). With JC1+, stock cords give me a bit of a digital, 2D sound. Using AQ Hurricanes, I get a very musical, ‘organic’ presentation with a lot of depth - just the way I like it.