I think its power is in subtle usage..i am currently working on a project it really helped to imporove the bass line to cut even better through the mix..just a little touch as if there is nothing..but when you bypass it, you realize you need it!
I love this thing on my guitar chain through the apollo. Vintage Amp Room / ENGL E765 -_ Vision -_ TwinTube is just awesome. So beautiful... I've seen a lot of hate of the word "warm" when it comes to describing plugins... but this thing really does add warmth to my guitar tracks and something interesting and unique to vocals. I'm still finding where I love it with vocals but I couldn't be happier with this plug.
Love the warmth and subtle distortion the Twin-Tube adds to the sound. We used it and many other UAD plugs on our new album.
Does work well for me, like salt, to be used wisely, can kill the mix if too much is added.
Sounds better then the built-in tube saturation of cubase.
Without the natural hum of a real tube crancking (like the 4-710) i use sometimes for that, but less meaty also.
A bassguitar or a electric piano, you want to raise the fader up to hear it more but the mix does not handle that nicely, so the instrument needs to be more present but not higher....
Let's bring in the twin tube and distort it a bit and it cuts thru any mix.