I saw this unanswered post you wrote and may have some ideas for you.
Based on this thread: https://www.muffwiggler.com/forum/viewtopic.php?t=178163&postdays=0&po storder=asc&start=50
I am making a whole series of 2HP utility modules and could probably make these passive log attenuators for you. It's also a pretty simple DIY if you wanted to make it yourself. Just a pot and two jacks and the panel. I would make a double with switch for CV/Audio pot taper. I'll probably make some either way since you likely aren't the only one looking for it.
Instead of me or you building one from scratch, there's a trick which you could use with any of the existing linear attenuators to taper the pot with an added resistor. This is what intellijel does in their modules with a pot having a switch for CV/Audio.
If you search on "pot tapering secrets" you should see a pretty well-known article about the details to do this. Basically a 10K resistor with a 100K pot.
If I did make one or more for you, where would you want to purchase it? Do you have a preferred dealer to buy from? br> br>