Controling the speaker is important. The pre alone is a vast improvement to a normal rig but pairing it with the right speaker is important. I'm sure the Hellborg speakers are a huge part of the transparency the pre offers, since every speaker/cabinet will impart it's own sonic stamp on the tone. I can not stress how impressive the entire system is and how differently you will feel about your basses. Turns out, I like transparency for some stuff and a little color for other stuff. I really wish everyone could at least try it, if for no other reason than to hear the true sound of your bass and have that as an option. Wow, I never post this often in between practice. Back to it.