It is sad,and many have purchased back up boards. The price of a KN7000 in good shape is around $3000. I stole mine for $2600 new. It definitely was ahead of it's time four years ago.
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact