D Debra PRO UHF IEM ER-2040 Dual Channel Wireless in Ear Monitor System with Earphone, for Stage, Recording, Studio, Band Rehearsal, Live Performance (with 2 Receivers)

For £169 they're not too bad. The shells of the receiver packs are plastic and not cast metal, which is disappointing, because the hammer packs get during a show, which is a shame. The build quality on the transmitter unit seems decent enough. The LCD screens on both transmitters and receivers are clear and bright. The headphone drivers seem OK. The packs didn't drop out when walking around the house, which surprised me because the walls are thick, there was no hiss which I have experienced from more reputable companies IEM products. I put a clean signal from my mac into the transmitter and attenuated the volume to -5 db and not peaking. I know all that will change once they are put in a live situation where there will be fequency variables from other sources which could interfere. I'll road test the unit this week on a couple of shows, one acoustic and the other a rock band and I shall report back on my findings.

So, I’ve purchased the my self and the other guitarist to use in the band I play in, these were bought as more of an experiment..we have used them at a practice and so far so good, the headphone wire length is a bit of a pain in the arse but it’s work able, the instructions are useless, they are a straight translation and don’t make sense, I somehow put my transmitter on mute and I had no idea how I’d done it, the instructions didn’t what how to take it off mute so I messed with it for ages until I somehow turned mute off…!!!Waiting to gig with them, then I’ll do a proper review, but so far so good.

The receiver that worked, worked really well. Could hear signal in different rooms of the apartment.The other receiver only worked if sat right next to transmitter, without moving. Changing frequencies made no difference.Therefore this was useless and untrustworthy as a wireless monitoring device for live performance.Manufacturer offered to send a replacement "from China"... no indication of timeframe or guarantee. I had to return the unit and look elsewhere. Unfortunate.

Very cheap for what it is, so good value if you’re on a budget. Causes some interference or hum through our pa unfortunately. Unplugging one of the antennas helped . We use to listen to click track and a basic guitar and vocal mix. Obviously you all have to hear the same mix but it’s like a quarter of the price of any alternative. You get what you pay for but this is good value to “get you started”. Hoping to upgrade in the future but for now this is okBattery life is ok. The supplied headphones have a really long 5m cable and sound bad. Replacing those with proper monitor headphones makes a massive difference