| I've got one, and it is fantastic. I use it with my ABG. I switched out the stock tube with an EH and I use the bos as a distortion unit with my electric too. You will notice a bit of loss of bass output with the notch filter fully cranked, but it REALLY helps to cut down on feedback. I also use the notch for my electric in boomy rooms. It's a great unit in that way too for keeping your sound under control in those rooms with a "rattle" frequency. right now I've got it tuned to the frequency of my practice room so i can play at reasonably loud volume without shakin the neighbor's walls. | 
