WOW I bought one of these from guitar center the other day. Couldn't resist and had to buy one to try out. Oh my, I found my new preamp. This thing sounds Killer and very clear and natural. Not eq-ed and all colored up like most preamps on the market!!!! Very cool with the tone knob punched out you get the instrument direct with a wonderful smoothness and a volume control on the U5. It also has an engage button for the 6-position eq setting which is wonderful!!! I hat all the parametric color your sound crap. Why buy a wonderful and expensive instrument to never hear it. Ok anyway, I have been so happy with this thing that I had to come and post a thread to see who all is using or has used these and do you use it for an actual preamp?