I recently purchased a wireless headset, my 3rd type and am very pleased with the audio response. There seems to be little if any time lag with signals which my other wireless sets seemed to have. The headset is light, and the transmitter is nice and small. I tried it on my GTI 2500, Master Hunter CX, GTP 1350, Scorpion, ACE 250, Infinium and AT Gold. It worked well on all Garretts that I own. I turned on the ProPointer, and it has does not sound off any audio with the metal detectors.
The AT series detectors must have an inline volume control, or else the speaker will also sound off with the wireless headset turned on. All the other Garrett detectors did NOT require the inline volume control.
I like using this set up in the woods, where bushes, saplings and branches tend to get caught in the headset wire. It is also good to use if hunting tot lots and kids are running around sometimes also getting caught in the headset cord, to the point of tearing the wires right out.
You may try some dealers to see if they carry these, or you will just have to shop around.......
Another winter project completed to fight off cabin fever.