Killer B Wasp. The Killer B's have been and are my favorite headphones for some detectors over others, and they provide an audio response that I can hear with my hearing loss. The are comfortable and fit snuggly, and the audio is tough to beat. Then, along cam White's Pro-Star headphones and my Killer B's are now my back-up headphones, for the following reasons.:
>> They have a similar design package so they fit snugly and yet are comfortable.
>> The speaker impedance and dynamic range provides a fairly crisp and brilliant audio and not a more muffled sound like some headphones have.
>> They are made by White's and have a Lifetime Warranty.
>> The ear cup they use is more of a 'tank style,' similar to the Killer B Hornet, which is not quite so roundish in shape, and has a little larger or 'roomier' cup for the ears.
I have been using my Pro-Star headphones ever since they were first announced, and I use them on every detector in my arsenal.
For the dollar I think you will find them far superior to the Koss headphones you have been using. They fit better; block outside noises better; and give you excellent audio. Plus you have separate volume controls for each ear cup so you can balance the response to fit your hearing.
Monte