phono preamp for Primaluna

Try a used EAR 834P! Might cost a bit more than you list. 

How about the Bellari phono stages? Two models available: VP549 ($149) and VP130 ($275). SS and tube (12AX7), respectively. Both are MM only. Bellari does make a SUT for low-output MC cartridges - but for an additional $500. I have the SUT. Excellent quality, made here in the USA (Utah). Check on EBay for sellers.

This one has impressive specs and features for that price point:

http://www.parasound.com/zphono_xrm.php

For a little more, consider the Elac PPA-2.

I have a PrimaLuna Dialogue Premium HP, too. So first thing is you don’t need to spend the $ on a phono  preamp with balanced outs because there are no balanced inputs on the PrimaLuna. Since you don’t want to spend a lot of $, I think the bottom of the picks would be the Schiit Mani. Next might be a Simaudio 110LPv2. Other ideas include a used Pass Labs. Not knowing the actual budget, the options are many. But I have owned phono preamps from all of the above companies and have been pleased. 

@bestbaker just saw the $500-700. I think you are looking at the Schiit Mani with money left for good phono cables. Simaudio Moon 110LPv2 is $399. Pass Labs used will be over budget. Those are some good options. I would go for the Simaudio.