It is sad for me to see more of this negative news about Ketron. I bought the Audya 76 when it first came out from Frank. Soon there after, I upgraded to the Ajamsonic at AJs. Both of these gentlemen have helped me through the years with minor things that turned out to be self inflicted. I now have the SD40, as well as my trusty Audya, that work perfectly. I am only sorry this puts a sort of cloud on AJ's endeavors, as he doesn't deserve it.
On the other hand, I remember thinking long and hard about the Audya purchase, as the Audya 4 was having bug problems at the time, but decided on trusting the above gentlemen in case of a problem. I was right.
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact