Ive owned 4 different amps with my dunlavys. Started with a B&K to an Acurus to a Krell and finally to Pass Labs. What Ive found is that the Dunlavys, while fairly easy to drive, are also ruthlessly revealing, especially in the higher frequencies. The cheaper amps and the krell had no problems driving the woofers but the highs were very often harsh and grainy. The Pass took care of that and improved the detail in spades. I run my 4a's with the Pass x-350. Its probably overkill but the looks are great and I like the zero feedback design. Speakers are 12' apart against the long wall and I sit about 10' back
