900 mhz wireless speakers? My name Is Ethan, Floor Manager @ Krystal Music .We are a full line

Question

My name Is Ethan, Floor Manager @ Krystal Music .We are a full line music store here in Kentucky. In addition to floor sales and also tech service -we also do commercial installation P.A. Systems throughout the area. My purpose for contacting you is concerning a job thats came up us...A local restaurant wants a wireless speaker system installed so they can play "muzak" in their main dining area. I recommended to them the "Advent 900 MHZ wireless speaker system". But Now my main problem is that Everywhere I Look ..they have been discontinued.(Specifically -the AW820 model). Is the AW820 Model being discontinued? is there anything comparable?...And lastly ...is there Wholesale Direct Availability?
...............................please respond with any info you might have
Thanks