Thank you for your confirmation.   My friend heard KMA sounds for 30 minutes.  He, too, thought the KMA sounded very good.  It seems that he is going with the KMA. 
By the way, how do you compare the SD40 with your Korg PA1000 or E-A7?
Thanks,
Chris
Edited by Torch (02/12/18 10:35 AM)
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"You Shall Know the Truth, and the Truth will set you free." John 8:32