I have been looking at the JBL SA750 integrated amp, lots of features packed inside. It doesn’t have tone controls, but some have suggested that the DSP the same, sounds complicated to me. That’s been part of my hold-up. I’m not glad you’re having problems, but good to hear of your experience. I’ll guess I’ll stick with that my vintage Sansui, for now.
Back in the day I owned a Technics 8055 equalizer with a spectrum analyzer. Very cool, albeit blingy, piece of kit.