Options/Customization
As for audio, midi and USB circuits can be available to drive external sound modules and devices.
Midi and USB
Multi-tiers stand
For several keyboards + laptop, can be adjustable in depth and height. These are customized stands that can be built according to personal specs.
In the full option case, you can have circuits for audio with many separated outputs, several control pedals, midi, USB, and the AC power required for such a system.
More circuits and AC power
full 360° rotating keyboard stand