wireless headphones

Hello all. I am having someone of an issue finding a wireless headphone set up for my minelab CTX 3030. My first choice was gray ghost Wireless with the module that plugs into your detector and transmits a signal to the headphones. They don’t make them anymore but I found a dealer who had a set...

It appears there are two models of the Simplex+ that dealers have. one at $254 without wireless headphones. one at $339 with wireless headphones. My question will the $254 model that does not have wireless headphones even pair up with wireless headphones from other vendors like Miccus SR-71's?

has anyone else notice the Equinox wireless head phones have a deeper bass response and does not report the higher pitched tones accurately? It might just be me, with bad hearing in one ear. But when I use my iPhone ear buds on the 800 the high pitched tones come in sounding like high pitched...