Vandersteen with Aesthetix

Anyone using Aethetix gear with Vandersteen Quatros or above? Are you using the hi-pass in the amps or the M5-hp?   I’m getting odd readings when I try to verify the correct M5 settings.   Thanks
Ask John Rutan( audioconnection).
He sells Vandy and Aesthetix.
Weren't you going to try Ayre?