These speakers were purchased 10 years ago by a family member. They were gifted to me in June. My former speakers were ProAc 1S's. These speakers are very similar sounding. Both have same bass energy, same smoothness, same peculiarities of placement, same mid-range focus. The Aeon's have a less in your face sound. Bigger sound-stage. More depth. Slightly better imaging and detail. Currently using a Cyclops amp which gives the speaker that " alive " sense of sound. Couldn't be more pleased with Aeon's. Great tech/ customer service.