At the beginning of each Turkey call review I do, I'm going to make the following disclaimer: I understand that how much one likes a particular Turkey call may be a very subjective thing - what I aim to do in this review is to tell how I liked or disliked the call.
The Super Yelper is a "scratch box" type of call. It is a hollow, rectangle-shaped box. It comes with a half-round wood "scratcher", and the whole thing fits in your pocket nicely and quietly. This call is extremely light, weighing less than an ounce. It's available in Cedar, Walnut and Cherry, all of which smell very nice - although since Turkeys can't smell, I don't suppose that matters too much.
Of the Turkey calls I tested (almost 20 in all, including box, slate, push-button and mouth calls), the Super Yelper was the most difficult for me to consistently get the types of sounds that I wanted. The smallest change in angle of the striker against the striking surface changed the sound significantly. Perhaps some folks would like that quality, but I personally did not. I got a little frustrated trying to get some control over the sounds and I never got it all that well. In my opinion, it would take a lot of practice to get really consistent with this call. I will say one thing that made this call stand out from the others that I tested, and that is the tone of the sounds produced. I won't say that they were better or worse, but they were different. For a small box, it did produce some pretty loud volumes, so I'm sure you could use it as a distance locator call.
The Super Yelper is a neat looking call, and it has some interesting sounds, but I probably wouldn't recommend it unless you plan to spend a lot of time learning how to make your sounds consistently. I personally much prefer diaphragm (mouth) calls and slate calls for the widest variety, most control, and volume of sounds.
Small, light, quiet to pack
Difficulty in making consistent sounds
POST-SCRIPT: When we say that we tested these calls, we mean that we TESTED them, in the field.