Any High End Tube Preamps with *gasp tone controls?

Well I don’t know what kind of an equalizer you’re looking for but, FWIW, Schiit has a 6 band equalizer that has both XLR and RCA and 2 channels as well. Pretty ’good’ and relatively inexpensive ($300 +/-). I use one.

I could build you a custom "high end" preamp with any tubes, tone controls, etc.

Happy Listening.

 Thanks newbee! I also see Loki Max. I wonder if it’s worth the extra chunk of $?

If you can afford it, sure. That remote control will come in handy in finding the tone you are looking for when adjusting for sources like records and CD's. For some room or system correction, no so much. You won't be fiddling with it that much or often.  Sonically I've never heard it but I think it might be hard to distinguish the sonic difference between the 2 six band eq's.  If you put this in a tape loop it's easy to distinguish the changes made by the eq. If you have in-line and use the switch on the eq, not so much I think. 

Transcendent Sound "The Fixer".  I believe it is zero gain. I know it is a kit, but there are folks on the Transcendent forum who would be happy to assemble the kit for you for a fee.

You will be shocked at the sound quality of the Transcendent amps and preamps.