I would say that the more professional the equipment is, the less chance of it having an echo effect.
To be honest you’re lucky there’s one at all. The vast majority of DJ kit doesn’t bother with such gimmicks. It’s the sort of cheesy thing you’d find on cheap mixers from the 80s.
I think it would be fair to say that the vast majority of DJs wouldn’t need or want such a thing. Many don’t use a mic at all, and those who do, want it to be clear and effect-free so they can be understood.
We’re DJs not musicians, singers or producers.
Then you should buy something designed for singers, not DJ equipment. You shouldn’t expect something of a TC Helicon standard to be built in to DJ equipment. Most DJs don’t sing!