I have been recording on my Tascam 414 with both my guitars and my mikes using the preamps in the Tascam 414. I don't know that I am unhappy with it, but I am interested in anyone's opinions of the preamps built into this recorder. My only complaint is that they seem to be somewhat "shrill". I have great highs, but seem to be a little weak in the bass. What opinions do experienced users have?