I've had a few E-callers. I started out with a Johnny Stewart back in the late 60's early 70's. It use to play 45rpm records. I really thought that was the best thing in the world. The cats meow. Until the records warpped from the heat when left in the truck. Then I bought a Hunter's buddy. Not at all satisfied with it either. A lot of static when you turn the volume up. And after a few hours the damn thing weighs a ton. Also when it's cold out the tapes really don't play well. I use it strickly for crow hunting now. I purchased a Fox-Pro 532 and I can't believe the difference. Light weight sounds terrific, and I can carry it in my pocket when leaving the stand.