Anyone using ARC Ref 5SE Preamp with McIntosh 275

I hear there maybe a compatibility problem with the input impedience of the MAC not being high enough.
The ARC Ref5SE and a McIntosh 275 is NOT, 'a-match-made-in- heaven'. Even if the impedance can be resolved, you are talking about performance characteristics on the opposite ends of the scale.
ARC and Mac---a marriage made in hell. Go all ARC or all Mac.