Russ
I would check out the BBE Sonic Maximizer. It comes in several models.I have the cheap one($99),and I wouldn't be without it until I got my Bose PAS.It makes the sound come alive.
Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact