I do get some of the anti-tone control arguments. I never thought about channel to channel tracking for instance. Cheap stereo pots may vary widely. I’ve also used cheap pro EQ’s and they were not up to par.
I use a Parasound P7 for my pre, which has tone controls as well as bass management. Honestly I feel they are veiling. I wish I knew more about the circuits to see if they could be improved. On the other hand, the DSP unit I use for my subwoofer and center (sometimes) is as transparent as I could wish for. It is also far too cumbersome to use for basic album to album tweaking. It’s a measure, calibrate, and forget type of unit.
What I wish I had today is closer to the Theta Casanova. Convert everything to digital, and EQ in the digital domain. And I’d like that not to cost $10,000. Also, it has to sound GREAT, which the Casanova did, and was the only affordable processor I ever liked the sound of. Affordable only because it was used. :)
Best,
E