Well, I'll chime in on this...just my opinion and style of detecting...
Though I do appreciate some audio differentiation between a deep and shallow signal, I'll probably never set the gain lower than 7, and more than likely, keep it at 8. The reason is, that my main goal is to just hear the initial target signal within the parameters of what I've set for discrimination, so I want some significant amplification, or enhancement. If I'm in all metal, I still just want to make sure I hear a target. After you hear a target, what's the first thing you do? I'll bet its to look at the screen to see where the numbers or cursor is registering. And guess what?...to the left of the screen is the depth meter. I know its not a precise, graduated meter, but if I see the bar only half way up the scale when sweeping, I know I've probably got a target around 6" deep, which only serves to stimulate the anticipation of what might be down there, given its a deep target.
My hearing is not what it used to be and I'd rather not risk missing a faint signal, just to audibly get an indication of depth. I might miss a deep whisper of a signal with little or no amplification, like the 4-5 gain setting. Better for me to check out the depth meter.
As an example, my last time out for the year was last weekend, and I hit a well pounded ball field, but hunted outside of the outfield fence. I was getting lots of clad quarters about 3-4 inches down. The only thing that kept me there was that wheat cents were coming in at about 5" and I'd found about 10 of those...from the 20's through the mid '40's. Then I got another solid quarter signal, but the depth meter showed it at just over 6". When I dug the plug, a nice silver quarter (1944) popped out right around 6-7". I can't say that the audio signal was any fainter than the other quarters, but the depth meter told me that I might expect to find something good, or older since it registered two inches deeper than the clad I was finding.
Again, just my opinion and detecting style. If one has no problem picking up a faint signal through one's headphones, then they may set the gain as low as they want. I just don't want to risk it.
Knipper
Though I do appreciate some audio differentiation between a deep and shallow signal, I'll probably never set the gain lower than 7, and more than likely, keep it at 8. The reason is, that my main goal is to just hear the initial target signal within the parameters of what I've set for discrimination, so I want some significant amplification, or enhancement. If I'm in all metal, I still just want to make sure I hear a target. After you hear a target, what's the first thing you do? I'll bet its to look at the screen to see where the numbers or cursor is registering. And guess what?...to the left of the screen is the depth meter. I know its not a precise, graduated meter, but if I see the bar only half way up the scale when sweeping, I know I've probably got a target around 6" deep, which only serves to stimulate the anticipation of what might be down there, given its a deep target.
My hearing is not what it used to be and I'd rather not risk missing a faint signal, just to audibly get an indication of depth. I might miss a deep whisper of a signal with little or no amplification, like the 4-5 gain setting. Better for me to check out the depth meter.
As an example, my last time out for the year was last weekend, and I hit a well pounded ball field, but hunted outside of the outfield fence. I was getting lots of clad quarters about 3-4 inches down. The only thing that kept me there was that wheat cents were coming in at about 5" and I'd found about 10 of those...from the 20's through the mid '40's. Then I got another solid quarter signal, but the depth meter showed it at just over 6". When I dug the plug, a nice silver quarter (1944) popped out right around 6-7". I can't say that the audio signal was any fainter than the other quarters, but the depth meter told me that I might expect to find something good, or older since it registered two inches deeper than the clad I was finding.
Again, just my opinion and detecting style. If one has no problem picking up a faint signal through one's headphones, then they may set the gain as low as they want. I just don't want to risk it.
Knipper