Integrated Amp recommendation


I have a 2 channel setup in my home office that I am considering upgrading. It consists of a vintage Yamaha CR-2020 (bought new back in the 70's-but getting a little long in the tooth), a pair of Polk Lsi9's, and a Velodyne sub (which is off most of the time). This setup works very well for me. Although I listen primarily to jazz, (CD, vinyl and some digital) I enjoy many types of music. I am currently considering the following integrateds to replace my aging Yamaha:
NAD M3 (used), NAD C375BEE, Anthem 225, Yamaha A-S2000, McIntosh MA6500 (used), and Cambridge 840A v2.
I am leaning toward new vs used as I don't plan to upgrade anytime in the near future. My problem is that I live in an area that I can't audition ANY of the above.
I would appreciate any recommendations.
lotsabs
Either the NAD M3 or C375 are a good match for your speakers.

The C375 would be a big savings over the M3 and would probably be as much or more than you need with the speakers in your system.
I am partial to British integrated amps like the Roksan K2 would work nice. It sells for $1925.

But to be honest I think I would go for the NAD 375 and save some money. It will work great with your Polks. Or if you want a tuner get the NAD receiver.