Budget preamp recommendation...besides Schiit.

Khozmo passives or Hattor passive/active, both made with high quality attenuators and parts plus huge selection of options between the two "sister" companies (i.e., same owner/manufacturer - Hattor is to Khozmo what Lincoln is to Ford).

What’s wrong with Schiit? I have found that the Freya+ is quite responsive to different tubes, thus giving the ability to tailor the sound effectively.

I second Quicksilver or Conrad Johnson .   CJs are tough to find at a reasonable price though.     

The preamp is the most important component in your system, choose carefully 

Van Alstine!

https://avahifi.com/collections/preamplifiers

If you are interested in a kit, the Akitika PR102 is both transparent and well featured with modular options to include headphone and phono, with or without motorized remote control. Price is very reasonable for the performance.  This is really the only true “budget” alternative to Schiit.  Well under a grand.