Advice on pre-amps needed

I think that depends upon whether you want tubes or not.

Tubes have that special magic, but it comes at a cost.
The cost being tube noise (tube rushing).
If you can live with it, I agree with Nrchy, that the Aeshetix is probably the way to go. It has a remote control, which might be important to you, as it is to me.
(It also has some cool phono input controls that most other preamps lack.)

If on the other hand, you relish deep, dark, backgrounds, than the Ayre K-1X is a good choice. It is very musical without being analytical, as some solid state preamps can be. (This was my choice, just so you know.) It is very good both as a preamp and the phono boards are very good as well. (It is much better than my old ARC LS-2 preamp and PH-3 phono preamp combination. I grew to hate the tube rushing noise.) I love the detail and the utterly deep, dark, black backgrounds that the phono boards provide. It also has a remote. (Note, the remote only handles volume control functions, including mute, although, it would also turn your amp on and off as well.)

My two cents worth anyway.
Good luck in your search!

Frankpiet,

As both your pieces of equipment are brand new, I highly suggest that you pick a full range, dynamic, piece of music and run it 24/7 for the next week or so, in order to break in both pieces of equipment properly. (It will probably take a minimum of a hundred hours or so to get the break in process well under way. It could take a few hundred to actually fully break in your equipment.)

Personally, I am like you. I like having a preamp in my system, as I find it helps flesh out the sound. However, some people prefer to keep as much equipment out of the signal path as possible. (Six of one, half a dozen of the other!)

(Just be glad you don't have a phono cartridge to break in too! (Or at least not yet anyway!) My Koetsu cart's took a couple of hundred hours to fully break in. Luckily, they sould good right from the start, and end up sounding great!)

Good Luck!