Having the Audya and S910, I agree with Henni. My S910 is great for quieter settings and is so easy to play. The Audya however is a different breed entirely, having great sounds and fantastic realism with its live guitars and drums.

They both are great in what they do.
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pa4X 76 ,SX900, Hammond SK1, Ketron SD40,Ketron Event X Centerpoint Space Station, Bose compact