Amps clip and momentarily. Long before clipping becomes objectionable there is clipping or limiting. This is why AVR's simply do not get louder after a certain point. The sound just gets flatter.
When auditioning the F206's they were driven by a NAD integrated amp. At about 11:00, the sound did not sound right to me.
At my brother-in-laws home, we listened to them driven by Outlaw M2200 mono-block. Driving into the mid 80db levels, they began to sound harsh. Possibly due to the class-g design. He later upgraded to a Parasound A21, they came alive. These speaker rock and they like good-clean power.
On a budget, I look into the Emotiva and Monoprice amps.
Oppo UPD-205 | Sonica DAC | BDP-105D | HA-1 | PM-1 | Emotiva XMC-1 | ATI Signature AT6002 x 2 + AT6006 | Revel Salon2s, Voice2, Studio2s | Velodyne HGS-15 | LG B6 | Lumagen 2020