I've spend a lot of time with the A6 center and it doesn't fair well at high volumes.
Dialogue gets muddy but at low/moderate volumes it was ok.
Depending on your listening habits it may/may not be an issue.
I would take up Zorba's suggestions
Speakers: KEF Q100, Q300, Q750, Q650C, Q50a / Fluance Signature Series/ DCM TP160S-CH Subwoofers: Outlaw Ultra X12 (x2) / BIC H100-IIReceiver: Denon AVR-X4500H, AVR-X1400H Integrated Amplifier: Yamaha A-S501/ Fosi Audio TPA3116 mini amp Extras: MiniDSP Umik-1 Amplifier: Emotiva BasX-A300 Next Speakers: Triangle BR03, Revel Concerta2 M16, Dynaudio Emit M20, Buchardt S400, Triangle Comet ez, KEF R3