Stereo (And multi-channel) is designed to allow listeners who cannot be at the venue to experience it in their home, and for this you need at least stereo. (Hence Arrangers promote stereo as they are designed primarily for home use) Pro keyboards don’t prioritise stereo, but instead talk about channels needed to achieve a particular result
Trying to create a live feel in a live environment is pointless, as it’s already live.
Bill
I am trying to understand your last statement. When one plays an arranger, "recorded" multi instruments are playing.
That itself (various instruments playing different parts)is not "live," correct? When I play a solo instrument either digital or acoustic, it doesn't really benefit from stereo, but when a lot of instruments are being played from an arranger or from an audio file, stereo does open up the acoustic space though it creates the"sweet spot" issue.
Hi Torch
When you listen to a live group, band etc. you don’t need stereo, just a channel for each performer, as everything is already spread out in front of you.
In the home you do not have space for live performers; therefore you use a stereo or multichannel system to emulate the live effect.
If you are a solo performer, then all anybody will see is a solo performer, and no matter what effects/sounds you use will not change this, hence the keyboard is of secondary importance, as the crowd are interested in the player. (Thus trying to replicate a live band in a live environment with a solo performer is pointless, except for your own personal enjoyment)
Hope this clears up the confusion
Bill