I have recently started looking to build a home theatre system, but not sure about some aspects so looking for some guidance. I am looking at getting a Sony TA-AN1000 AVR with a 5.1 Klipsch speakers. I needed to know if this receiver would be able to drive a pair of Klipsch RP-600m ii bookshelf front speakers, Klipsch R30C centre channel, a pair of rear Klipsch 50m and Klipsch R-121 subwoofer. According to Richer Sounds in UK, this Sony AVR which is released very recently here in the UK pushes 85w per channel, although two channels are stated as 120w each on some specs. Klipsch RP 600mii are 8 ohm 100 watt speakers, so would this Sony receiver be under powered to run those speakers in a 5.1 config? I understand that it's better to have more power available per channel then the other way around. I am concerned that 85 watt per channel would lead to clipping or other adverse effects over time to that fairly expensive Klipsch speakers. Please note that there's no pre-amp out on this particular UK model of the STR-AN1000, which is the US model of this AVR. Any insight/guidance on this would be highly appreciated

Thank you
The Sony should work fine. Might play with this a bit
http://www.hometheaterengineering.com/splcalculator.html (but I'd take 4-5 dB off of the sensitivity specs Klipsch uses, they're a bit overstated as they use an "in-room" spec. Maybe check this article out
https://www.audioholics.com/loudspeaker-design/truth-about-matching-amplifier-power
If you don't want to drive an amp into damaging clipping.....don't do it (turn the volume down, it likely won't sound good at that point either as well as being quite loud). The avr doesn't "drive" the sub, tho, it has it's own amp. The different ratings in the amp's output wattage are due the way they are specified (impedance, distortion, frequency range). Here's the manual's specifications....I'd assume the 85wpc rating is an 8 ohm rating....
(6 ohms, 20 Hz – 20 kHz, THD 0.09%)
100 W + 100 W
Stereo Mode Output Power
(6 ohms, 1 kHz, THD 0.9%)
120 W + 120 W
Surround Mode Output Power2)
(6 ohms, 1 kHz, THD 0.9%)
165 W per channel