Looking for a well matched Preamp. Pls advise!

line level preamp out to sub line in; sub high pass line level out to amp, that gives both the amp and the speakers a break, neither try to make low bass.

that sub, line out is to a second sub I believe, you need to read it's manual

What Marantz are you using?  I disagree completely that it’s not worthwhile to upgrade your preamp.  A preamp is critical, and a good dedicated stereo preamp will greatly improve overall system performance whether you’re using your turntable or DAC especially if you’re currently using a mass market AVR. 

@soix   Thanks. Marantz SR7005. 

@fatdaddy2 @mggartner   Thanks for your thoughts. While I’m pretty happy with the Vic, (90% of my listening  is using the wired connection) It nice to stream an album to my office or deck via Sonos.  Having said that, i would like the Preamp to be somewhat versatile if i decide to move on from the Victrola. 

Rotel’s RC-1572MKII Preamplifier,

Note I have the Mk1. 

While I’m searching for another hi end preamp after I sold all my mac gear, I picked up one of these used for a few hundred bucks and I’m really surprised how nice it is for the money. It seems to not affect anything in the chain negatively and doesn’t add much of its own flavor, its clean, detailed and musical. Full of features as well, DAC, MM stage, Balanced in an out as well as RCA’s. Sub out etc. decent remote as well.

For system reference I’m driving a $24000 Moon amp and Magico A3’s with it. It’s rather a nice little preamp that is a great value IMO. Especially if you find one used.