Neil ,
When you have hearing that is not all that good , I find that when using phones with a lower ohm rating are LOUDER than ones with a higher ohm rating ..... Another difference that I find is that on the Gray Ghost line of phones, the dynamic range is designed to a more narrow range ....They do not sound as FULL sounding ....They actually sound pretty THIN which to me gives a much better representation of the actual target ...You hear little nuances of the targets tone that you would not otherwise hear from most other phones ..... Some would argue that they sound "cheap" which they do as they are not smooth sounding like normal stereo headphones sound .... Bunch the rest of the stereo phones together , and I couldn't tell you one set from the other ..... They all have the same dynamic range, and even the same ohm rating .... The only differences are the shell and how they make the limitter ..... On the ones that folks buy for detecting , they have added volume controls , and some sort of limitter , but the actual dynamic range is all the same ..... It's pretty much the same as the phones we use for listenning to our stereo's ...... On said phones that are bunched together with the same dynamic range ( and I'm including my Sony phones ) I would agree with you about telling the differences in coins .... The tone of Silver, and the tone of Gold, are the only 2 tones on the Sovereign that I can tell distictively ..... unless we are talking about zinc pennies and nickels ..... The 180 range coins I can't tell you one from the other unless there is a meter and even then it's hard ..... This is the reason I end up with so many copper pennies when I dry beach hunt the Sovereign .... I use the cheap Sonys now because THEY ARE CHEAP , and I can have a few set's laying around , PLUS the fact that they are LOUD enough for me to hear targets well ..... I am in the process of slapping the Sony earpieces into a set of Peltors ..... They should then be LOUD enough for a deaf man, and isolated enough that you should be able to find targets next to a running bulldozer !!.....Jim
Jason,
My original Sovereign has the pitch hold .....It has to do with how you have your Sensitivity and your Threshold set , and also your soil conditions ... I was wondering the same thing on my Sovereign until I started adjusting it differently .... I can even adjust how long I want the last target tone to go on by adjusting my Sensitivity ....Jim