AV receivers vs. AV reparates - sufficient power for 5.1
I am looking into putting together a new 5.1 setup but finding myself in a struggle trying to choose the best components to drive the speakers.
The speakers I have chosen are:
1) Polk Audio S60 FL + FR - 8ohm, 90dB, 20-300W
2) Polk Audio S30 center - 8ohm, 89dB, 20-125W
3) Polk Audio S20 RL - RR 8ohm, 88dB, 20-125W
Up until now, my understanding has been that unless I start looking into serious high-end speakers, any decent modern AV receiver would be sufficient. However, for the past few weeks I have done quite a bit of reading on this matter and started doubting that sentiment.
I was thinking about getting something like Sony STR-DN1080 7.2 (variety is limited in my country).
It says 165W per channel (6ohms, 1kHz; one channel use, THD 0.9%) and I was planning on bi-amping the floorstanding speakers but is this a good idea?
Should I invest in a receiver that has pre-outs and get myself a decent amplifier? Or some other solution?
Thank you for any thoughts and suggestions