That may be true, but as a performer, if I do not like what I sound like, I won't be inspired to play better. If the sounds coming to my ears are crappy, muddy, and don't give me pleasure, it will project to the audience. This will translate to a less than ideal performance.
What inspires me to play better is the response of my audiences. They tend to be inspired by the crisp, clear sounds coming from the PAS. Why not give the Bose PAS a try with those Leslie sounds and then provide us with a report of your findings. For me, personally, I couldn't hear any difference with the vibrato, but the sounds coming from the Bose were much more distinct than those coming from the Barbetta and Peavey amps I used. I don't rely much on organ sounds, therefore, I would value your report after trying the same setup using the Bose PAS. It would also be a good idea to have someone who is not a musician to listen to the comparitive test and provide an unbiased report.
Cheers,
Gary
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Travlin' Easy