So I play in a band where we are now using IEM both for hearing our instruments, but also for backtracks and click. However, paying tons of money potentially mostly for possibilities of switching frequencies more accurately as well as somewhat improved sound quality... well... it wasnt worth thousands of € at this point.
I knew the build quality wouldnt be "top of the line" due to the price. However, I am happily surprised. And as we keep these units mounted in our rack at all time, it's not really an issue at this time and I am happily surprised about the build quality (do not expect build quality perfection, though :)).
However, I did experience some issues mounting the units in my rack, as the units + the rack extensions are not fully straight, which can cause some frustration!
In terms of functions, you can switch frequencies by switching channel on each unit + belt pack. However, the manual is not very informative on this matter. If you do check the LD System website and look in the support / FAQ section, you can find the frequency summary, which might ease some things.
So... this is where the negative parts come: The sound quality is absolutely horrific! I mean... it's usable, but the distortion and quality decrease is absolutely insane. You will still hear what's happening, but everything will sound like a destroyed tape from the 70's or so.
But then... how much money is it worth only to have a bit better sound quality?
In terms of drop outs / frequency interference, we've had no issues so far. However, most of our gigs has been small club gigs together with some other bands.
But in a couple weeks we will do our first gig on one of Europe's biggest rock festivals... I guess we'll see how it works in such an environment! :)