Pinpointa, I did a post on that some time back, pretty much asking the same question, and then when I started thinking about it, I came up with a warning. I know a little about this stuff because I do some recording and am involved with audio a lot, and the bottom line that I think I see on the audio booster idea, is it might be good, if your phones aren't giving you enough volume for, whatever reason, and/or the detector isn't loud enough for you BUT,,,,, BE WARE!!!!. Here's why I'm saying that, and I've experienced the same thing at home and maybe you have too. (Let me put it this way) Have you ever turned on your stereo at home and forgot you had the volume up too high and it just about "blew you off your feet"? Well, the potential problem here could be magnified many times, to the point of causing permanent ear damage. Let's say you use the booster, and things are going fine on the really deep stuff, and it helps you to hear the "really faint" signals, now all of a sudden you sweep across a buried aluminum can at about 3 inches deep. The boost in volume, (and especially because it's right next to your eardrums, via headphones), would not only hurt, but could cause permanent hearing damage. In my audio recording course I took at school, they said something like, if the decibel volume is over 120 or so or "if it actually, hurts" your eardrums, you could be incurring permanent ear damage. I may sound like a wuss here, but a friend of mine, a fellow musician in fact, always seemed to say stuff like, "talk into my other ear", I can't hear you in that ear. Well I asked him why, and he told me he was walking by a PA monitor on a gig he was playing and someone yelled in the microphone or something and it blew part of his hearing away PERMANENTLY, in his right ear, so, just be-ware. If you could hook up some kind of (very quick) "volume limiter", it might help or even take care of the problem, but again, if the limiter ever quit working, you might be in trouble. The danger here is that, with headphones, the sound is so close to your ear, it's in effect magnified many times. Marc Trainor. As kind of an adjunct, I wouldn't want to discourage anyone from getting enought volume, including me, I'm just saying, you, or we, should check it out and make sure the difference between a really faint signal (using the volume boost) and a super loud one like that from a shallow aluminum can, wouldn't be enought to permanently damage our hearing. Maybe you could run some test on it, but just be careful of all this.

:O:|, and good luck!.