Hey xenophon,
Congrats on your choice of the Mother Load preamplifier. Aric is a very talented designer/builder, besides being a good guy, who builds great performing high quality gear at very reasonable prices. After I reviewed his KT-88 SET amplifier I purchased it to use in my systems. Right now I have is new P/P single chassis amplifier in for review and its "killer" performer in that it offers the color/tonality and image density of a SET design , but offers twice the watts to be able to drive less sensitive speaker loads.
You have a lot of fun coming your way when you get to hear your new preamplifier in your system!