I have found two possible options for a budget preamp:

1) Topping L30 Headamp / preamp - 139 eur.

http://www.tpdz.net/productinfo/511207.html


2) Pro-Ject Pre Box S2 preamp - 238 eur.

https://pro-jectusa.com/product/pre-box-s2-analog/


Topping seems to have some great specs, but the Pro-Ject is one of the very few with a remote.
It also has a fixed out for a headphone amp.
So if I don't find something new, I think this is the way.