What is the best pre-amp for ARC Ref 75SE amp?

I had the REF75 in my system for a week or so when my Ayre VX-R was being upgraded. REF5se is a fine match. Speakers Vandersteen 7
front End Analog and digital

IF you want another option an Ayre KX-R also pairs nicely with your amp.....

Thanks Al I am not an owner nor was I ever a dealer for Audio Research and did't realize they did not offer an RCA input on their amplifiers and I sure don't like adaptors being used on interconnects.

Regards
Jim