Dave Phillips wrote an interesting migration story on his blog → how he migrated from Mainstage to Gig Performer.
Click here to read the article: The Journey from Mainstage to Gig Performer - Rig Rundown | Dave Phillips Music | Blog
I’m finding Gig Performer enjoyable to use - it sounds great, and the visual nature of the app does seem to give a lot more flexibility than MainStage did, especially where my beloved MIDI is concerned.
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Great article!
Sound cannot travel through a vacuum 
To be serious, we are here probably more interesting in recording a Big Band so I reformulated my question:
Now I feel comfortable with my 24bit system. 
I cheated and searched for it. Tascam says that 32 bit gives a dynamic range of > 1500 dB. But that’s using floating point. The precision is much lower. For integer samples it is about 6 dB per bit. That gives a dynamic range of 6 * 64 = 384 dB.
Inside in your DAW or live host it is common to use 32 bit floating point. (VSTs are at least 32 bit fp, but can also be 64 bit fp.)
You are pretty right 
Taking Nbit rather than 64:
20.log(2^Nbit) = Nbit.20.log(2) = 6.Nbit
Another interview, this time with Dave and JP (Jose Pedro) together.
