I was thinking that too for fair comparison. Maybe the right term is 'showcase' instead of comparison. I'll try to record same songs on SD40 and E-A7, I don't have the PA900 anymore.
Thanks my friend.
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Jim

SD90,Korg I3, KMA Liverpool,TC Helicon Play Electric, Fender Sonoran Guitar, vArranger, Bose S1 Pros, Bose L1 Compact, Aiwa Exos-9