Great little dock here - the older style apple 30 pin connector is probably useless to most, but the AirPlay is what I bought this for and it works a treat. Connect it to your existing olde sound system and snap, you've got AirPlay functionality. Easy to use and sound quality is great.
Closest price I could find this for elsewhere is $95 (https://www.binglee.com.au/onkyo-ds-a5-ipod-iphone-ipad-dock) or (https://www.appliancesonline.com.au/onkyo-ds-a5b-ipod-iphone…).
What interface do you use to control it, if you don't have a 30-pin iDevice?