This is probably one of the most simple and inexpensive, yet effective accessories you can use while metal detecting to help find those very old, very deep targets. The Koss gain amplifier effectively amplifies those slight whispers from deeper targets that otherwise go unnoticed. Koss's gain amplifier will work with in conjunction with the headphones you currently use for metal detecting, so there is no additional cost of buying specialised equipment.

This great little metal detecting accessory gives you complete control of the audio output, adjust the bass, treble and mid range audio for optimal personal performance. The Koss Gain Amplifier will effectively maximise your metal detectors existing target amplifier with a few simple set up steps and adjustments.

In our field tests we found that we were able to detect small coin sized objects up to 30% more effectively with the Koss gain amplifier, than without. The Koss Gain Amplifier really works! Yes we at DetectorX.com were surprised, upon receiving the amplifier we were very speculative. We didn't think we would notice a difference, though we did in controlled conditions and in real world conditions.

If you want a Koss Gain Amplifier for yourself, there are a few ways you can get one. Though the easiest way