Aurum Australis B and Z Booster
The B+Z booster can be used with all Minelab detectors and with all battery systems. This amplifier produces a a clean signal response regardless of target size, without producing extra noise. It comes with a set of 2AAA batteries.
It has the option to switch to bypass mode. This is a very popular booster to use with the GPX 4500 and 5000, as well as the GPX-6000 & GPZ-7000, producing exceptional sound clarity.