DonnerEM1 Rechargeable Portable Personal in-Ear Monitor Amplifier Analog Headphone Amplifier Stereo Headphone Earphone Amp Volume Control Audio Booster with XLR and TRS Input 3.5mm Output Jack

It just works. Be careful though…if you are in a band, let everyone buy their own, and mark yours with a Permanent marker, cause people like to claim stuff. LOL

This is my first foray into IEM's and this box is perfect. I wasn't sure about IEM's and did not want to spend over $1000 for a great wireless system or roll the dice with a cheap one. A band member recommended these as they are dependable and we generally play small stages so being bound to a cable is not a big deal. The Donner box allows me to run my monitor mix directly from one of my Zoom L20 mixer's aux sends. The box is very light. As long as you use a good TRS stereo cable, the signal is clean. I bought some $50, 5 driver Linsoul KZ earbuds and the combination has given me a dependable wired IEM system. I am amazed at how well I can now hear myself and the other vocalists. our harmonies will be so much better. I find myself asking why I didn't do this before.Please note that It is necessary to have either a send that uses an XLR or to use a TRS stereo 1/4" cable or use and TRS to XLR adapter. With a straight guitar cable you will just get one side\ear. I actually kind of like that. This is a great product if you are okay with being wired.

I purchased this to replace a Behringer P1. Although the Behringer has a metal body and appears to be rugged, I have purchased 2 over the last 4 years because they simply fail. They haven't even been used all that much. I'm not sending Behringer any more of my money. I found this Donner EM1 online and purchased it. The EM1 is smaller with a plastic body and cheaper than the Behringer. I was disappointed that it was plastic. But it is much lighter and hardly feels like I'm wearing it. The P1 was so heavy, I definitely felt like it was there. If I didn't wear a belt, it made my pocket sag. The EM1 is very light. The sound quality appears no different than the P1. So far, I'm very happy with the EM1. I'll report back if it fails.

Does what it says - amplifies a monitor signal from the board and outputs it through a 3.5mm jack. Battery lasts long enough for 3+ hour gigs (possibly more - I don't play longer than that, and it hasn't died on me yet). Plenty of volume for my Shure 315s even at about 30% on the volume knob.One quirk to be aware of - if you use the 1/4" input on the combo jack, the unit interprets the signal as stereo, and will only output to one ear. If you want to use a mono 1/4" cable, you'll have the same issue. For mono signals, you'll need to use XLR. Nice feature, as it allows stereo monitoring if you have it, but I wish I would have known ahead of time.My only real gripe is the volume knob is easy to bump, and I have to fiddle with it several times during a set, usually, after knocking it out of place. Wish it were harder to turn, or provided a way to lock.

It works, as simple as that. You can charge it during use so it always works. You don't have to worry about batteries anymore

Tested this at home first. Plugged in headphones and powered on. Noticed a little bit of white noise, very quiet and tolerable though. Plugged in the xlr to my bass DI and it sounded great. Brought it to rehearsal. Plugged it into our mixer where a typical wireless IEM unit would get plugged in. And it worked perfect! Was able to hear the click and the full mix, plenty of volume on tap. Seems like the battery is going to last really long too. Really happy to have this for situations where I can have a wireless IEM unit. Definitely recommend for the price

My band plays pretty loud, but for some reason we just can't get the vocal monitors to cut through the instruments well enough for me to hear myself consistently. I needed a solution, and a good wireless IEM was out of my price range.This did the trick! I use a Boss VE-500 for my vocals, and it has two XLR outputs. Output #1 runs to the board I've got output #2 split between my powered monitor and this. This clips to my belt, and I have my IEM earpiece snaked up my back. The only drawback is that I still have 15' of cable tethering me to the mic, but at least I can hear!

I’ve taken this unit on tour with me the last few weeks and I’m happy to say that it’s doing the job well. The combo jack does accurately perform in stereo, contrary to some reviews from a previous iteration of the unit. If I’m being honest, as a stationary musician (drummer), this can be a real clutch piece on a stressful gig.The battery holds charge for even the longer gigs, but I recommend keeping a charger in the van or however you’re traveling. I’ve heard some news about it not charging after a while, but I’ve found that you have to charge it using its proprietary usb A to C cable… or one that matches voltage with the proprietary cable. It’s a drag, but knowing that you can possibly use another cable is worth mentioning. Do your best not to lose that original cable, though. I’ve had no luck with usb c to c.Hope this helps, enjoy!