Most likely the sony will be fine. If you ever added an external amp, the receiver would be the preamp and you would bypass the sony's internal amp. However, you might be better off just upgrading your receiver. Unless you really crank things up in a very large room, you will be fine. Again,the speakers will only use 1-2 watts most of the time to achieve pretty loud results, with brief peaks during certain music, your sony should be able to handle if it is rated at 70 or more watts per channel.
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
(M22-OWM22-VP100)-all in storage