Most of you are probably aware of electronic headphones made for ear protection while shooting. They cut out loud sounds, like gunfire, and can be adjusted to hear quiet sounds at the same time. They can be adjusted far enough down to hear normal conversations as far as a block away. It occurred to me that for those interested in security while detecting could use these to hear their detector speaker much better than normal and also hear any "security situations" approaching. Best part......good ones can be bought for as little as $60.00. I've tried them for this purpose and it works.
Just a thought.
Just a thought.