Any High End Tube Preamps with *gasp tone controls?

Luxman CL38uC

https://www.luxman.com/product/detail.php?id=27

Another ++ for Loki MAX.   Balanced in and out.  Super quiet.  Does only what you expect.   Great value too!!

I also would encourage you to try one of the Schitt tone controls. I have one connected to my Conrad Johnson LS17 preamp. The CJ  has an effects loop such that  can be switched into the playback chain with the remote control.

When I first got the Loki I was sceptical about it being transparent so it tried it, turned on but the tone controls in the neutral 12 o'clock position and switched it in and out via the remote while listening to music. I found it completely transparent with no change it sound. A good start.

I now use it solely to deal with "lean" sounding recordings. With the bass slightly boosted and the highs turned down a bit, it makes those recording much better, and I can choose to have it working it's magic or not with the push of a button.

I believe Schitt even has a 30 day return policy if you are not satisfied. Highly recommended!

I dont use tone controls, but i have them on my two Sansui amplifiers...

At times when my system was not finished or optimized , or for whatever reason they were useful... Audiophile that condemn their use forgot that we listen music with our own ears limits not with the gear first and last..

There is a McIntosh 220 preamp for sale here and it was a reasonable price.