It's really hard to get clean and warm tones with some amp simulations of the Eleven Rack. The Black Duo Amp is one of these. I like the clean tone of my Super Reverb Silverface "Real" Amp, and I tried several times to get that tone with the 11R.

If you set the volume at 5, the sound is really clean, yes, but it hasn't the low-end and the fat body that makes these amps great.
If you raise the 8, the sounds comes overdrived and undefined.
I tried with differents cabinets, mic, Eqs, Compresion... and after spending some hours tweaking and comparing with the sound of my real amp, I think I finally got it!
This is me noodling with my SX Guitar and the new patch.

https://soundcloud.com/guitarrilia/noodling-with-a-strat-and-a-twin-amp-sim-11r

All the guitars were recorded with the same preset.
The solo guitar has a bit of White Boost.

P.S.: I shared the preset of the lastest video here as "Tokai Soldano".