Hello! I've just found a pic of my amp... I use a Demeter tube preamp, a QSC power amp and a 4x10" Markbass cabinet (800w). It's hi-fi sounding and it's incredibly light for its size (28kg). I wasn't 100% sure about the use of power supply and cables... I was very happy to discover that the bass needed only the 5pins cable to play! :-)

I just got the exact Demeter tube preamp, and I must say, it really makes the alembic worthwile. When you make the signal distort a bit, it's heaven!. Working with this in a studio is really an experience.
 
Jure

Can you tell me more about the Demeter tube preamp? I really like the F2B, however, it comes up short on flexibility. I would like an FX loop, a direct balanced out and maybe a built in x-over. I also need it to be stereo, or dual channel. Any suggestions appreciated!
 
Here's a shot of my rig -