George, yes I do. Most analog EQs do muddy the sound a bit, but the trade off may be advantageous to those that are very sensitive to frequency response and play old and or poorly recorded material, or are unable to work with room modes. Again, the tape monitor can always be disengaged and they are out of the circuit. Dynamic range enhancement is more problematic in that it causes a lot of dynamic shifts. If you wish to try it, get a dynamic range expander with as many frequency bands as possible. All of this stuff is much better when implemented in the digital domain, but that won't do much for LP, cassette, 8-track, elcassette, radio and the lot.
Marty