Kenwood KA-9100, Supreme 500/600, Yamaha CA-2010, Pioneer SA-9500 II or SA-9800.
All of these amps are dual-power supplies like the AU-717 except the CA-2010. Also, most have 100wpc at 8ohms and up and when you get to the Supreme 600 its 130wpc at 8ohms.
Just depends on what you like and hear.