The unit does it's job mostly well but before buying you need to consider some facts, I hope this review will help you to make your decision.
Focus mode is a very good feature of the product, you can monitor two independent mono sources and set a balance between them in 31 steps. But you need to know that even if you set the maximum difference (like hard panning left and right), both monitors will contain some signal of the other. Try to use with not completely different mixes.
The unit makes some hiss but in a loud environment this will be not a huge problem and there's an onboard EQ in the receiver.
The most important fact is that the earphones will cancel other band member's play if you don't listen to complete mix causing to get off from tempo.
Setting up the system is very easy and it comes with enough accessories for immediate use including earphones, batteries for receiver, rack mounting kit and antenna extender cable. The device worths it's price but I guess, price of "big" names like Sennheiser and Shure have a reason.
Pros:
price, lot of accessories, easy setup
Cons:
both channel contain other input's signal even if hard panned, some hiss if noisegate is open
