Because the stereo image of an HD stage piano is vast (often recorded with spaced pairs and a room mic), use Mid-Side EQ. Cut the low-end (below 150Hz) out of the Side channel to keep your bass guitar centered and clean. Keep the Mid channel full-range for body.
Here is what you can usually expect under the hood: Ultimate Stage Pianos Hd Kontakt
Let's be objective. There are heavyweights in this space: Keyscape, PianoTeq, and The Grandeur. How does stack up? Because the stereo image of an HD stage
to create rich, textured patches suitable for modern production. Performance & Technical Specs Ultimate Stage Pianos Hd Kontakt