Upgrading to an external Phonostages for my system

Here is my system...

Harman Karman HK990
VPI Scout turntable with a JMW-9 memorial arm and an Ortofon 2m bronze cartridge (mm)
Revels F52’s
SVS PB-NSD subwoofer.

Not schooled on these components at all but I’m in the process of researching them. I know it’s important to match the tone arm, and cart to it. What about the connects?

Someone has suggested a used JD9mk11, another suggested a used Ear834P.

Any suggestions?

Thank you for your input.