EDIT: I downloaded the demo versions. You can use any of them for 20 minutes in demo mode, without any hisses, etc. After the 20 minutes, you must close your project and reopen it before the demo will work again. I found the preamps and compressors to work best on instruments, so far--I had trouble getting a good sound with vocals, partly because I already have pre's and compressors that I like for vocals. Their Tape Delay and Reverb, however, are good on vocals, and they have extra controls that appear if you click on the down-pointing arrows in the upper right corner of the interface. Worth mentioning because these controls let you modulate various aspects of the program with an LFO. Nice sounds if used gently.

But you were posting about Pianoteq and the preamps. Haven't had the chance to try the pre's or compressors with it yet. Just trying them on vocals and guitar took up most of my morning.

Today inside software, inside PIANOTEQ while you've a selection of mic models and several choice world piano manufactures' piano grand models, you got no preamp.  You've none to replicate that Beatles or Funkadelic piano or drumbeat sound coming through the preamps as heard off a real record.  That one which made everything recorded on Dad's reel-to-reel sound very homemade and outright amateurish to you.

Enter Arturia, which with its preamps now on sale can take your piano recordings from something somewhat digitally dry to indeed an enormous difference that simply reminds you of the olden days  —when unlike some popular digitally recorded song you were a boy who kissed a girl, or vice versa! 

Until March 4th, it'll do it at a special introductory offer per each of the three (3) preamp plugins on the company's product page (linked).  The offer amounts to a $49.00 (US) purchase price per preamp plugin.

However if you dislike the sound of that, you may become interested to know AUDIODELUXE includes the plugins along with several others sold in the Arturia FX Collection for a total approximately $299.00 (US).

I'm now considering a preamp audio example or two which I may post onto another thread if you're going to stay tuned.  You and others may like well to hear the combination of piano, microphones, and preamps all physically modeled; if it is truly identical to the piano recordings of yesteryear that is something surely you may just have to hear for yourself.

The Arturia Pre 1973

The Arturia Pre TridA

The Arturia Pre V76

Edit: included 'boy who kissed a girl’ part.  Let me see MODARTT also delete this post of mine!