Vacuum tubed tone control???

Bojack, you are correct. It is the Behringer T1951 Tube Ultra-Q. Parametic EQ with adjustable tube 'warmth' using 12ax7's. Not in the league with hi-end, but around $150 or less, won't hurt to experiment. I have one and would be glad to answer any questions.

Also, isn't the Musical Fidelity X-10D just a tube buffer, with no tone controls?

Tvad, I recently retubed a McIntosh MR71 fm tuner. It takes fourteen tubes in all. Most of the tubes that I rolled into the MR71 are Telefunken with a few Amperex in the mix. I'm amazed at the sound that I'm getting. It's the most musical component that I've heard. I thought that introducing a tubed equalizer into the audio chain might bring some of that musicality to the cd player as well. I really don't want an equalizer as much as I just want to add some NOS tubes to the chain. Stan

why not have a technician create an r-c circuit that will enable you to attenuate the treble frequencies, i.e., generally starting as low as 3000 hz ?

i have had personal experience with such a device.

there is no accounting for personal taste.