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EM1 is a rechargeable and portable personal in-ear monitor amplifier specially designed for stage musicians. The outstanding technical, sonic characteristics, high audio reproduction and no audio rendering were translated into a more compact format to EM1, so that you can clearly hear the sound of playing on stage anytime and anywhere.
Whether you're a drummer, keyboard player, Vocal, or other musicians, EM1 is an excellent stage partner. Meanwhile, EM1 is also applied to practicing instrument, studio recording as audio monitor with high power and volume.
XLR and TRS Input
XLR and TRS input connector with locking mechanism, Stereo/mono source switch depending on cable connection.XLR and 1/4” TRS input connector with locking mechanism，for connecting input signals. When the XLR is connected to balanced input, EM1 will output in the way of balanced mono. When the TRS is connected to unbalanced input, EM1 will output in unbalanced stereo.
Up to 12-hour long life
Micro USB Type C jack，connects the cable of Micro USB Type C for charging, DC 5V, 1A above current. The LED indicator will show red indicating it is charging.
1/8” TRS headphone output, for connecting the headphone. It is recommended to use 8 Ω - 250Ω impedance headphones, in order to obtain better result.C
Analog circuit design
EM1 is a rechargeable and portable personal in-ear monitor amplifier specially designed for stage musicians. The outstanding technical, sonic characteristics, high audio reproduction and no audio rendering were translated into a more compact format to EM1, so that you can clearly hear the sound of playing on stage anytime and anywhere.
Mariano Andres Sanin
2025-08-24 10:11:12
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
Raftice intermediate guitarist
2025-07-25 14:52:51
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 sideear. I actually kind of like that. This is a great product if you are okay with being wired.
AdamH0101
2025-07-24 15:26:35
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
Skillet
2025-07-06 12:25:52
So far, this is a great unit. I've used it on 2 gigs, and it's worked perfectly. I would definitely recommend this to someone looking to get into using in ear monitors at a low entry price point.This unit has a similar feature set to the Behringer Powerplay P1. It is at a higher price point which is part of the reason I gave it a 4 star rating. It's construction isn't as heavy duty as the Behringer. The clip is made from thinner metal, the body is constructed from plastic instead of metal, the battery isn't replaceable, and the mounting point is to EU standard 3/8" screw type only.Unlike the Behringer P1, its battery is rechargeable, it has 2 headphone outs, and most importantly the amount of power available for the headphones is greater. I have used the P1 and it's max volume is almost loud enough. It also has XLR and TRS input ability which makes it more flexible than the P1.There are a couple downsides to this unit that aren't deal breakers for me but should be taken into consideration. The power/charging port is located on the top year the headphone jacks. If you do want to work with it while it's charging the design could make it more difficult. The plastic construction feels a little cheap in the hands. The power switch on the side also feels a bit cheap. I suspect there's a normal switch like the mono/stereo switch on the top of the unit, that's just attached under the plastic switch that feels low quality.This unit does act as a mini 2 channel mixer if you use it in mono mode. This is the main reason I purchased it. I had been using a small mixer for many of my gigs so I could have a separate input for a metronome. This allows me to do that easily and cuts down on how much stuff I need to have on stage.I've been very happy with this unit so far and would recommend it to someone with the same or similar needs.
Obie Haive
2025-06-23 11:12:57
I've been using a little mixer for my personal IEM mix on stage. It was inconvenient to make changes because I had to keep it on the floor next to my pedal board because of the size. I clip this to my music stand and it is very convenient to change the mix and volume. I don't like clipping it to my body or instrument strap, but I'm sure that would work for some people. The sound is just fine and I'm not missing the eq from the mixer at all. The combo XLR 1/4" jacks are a nice touch and makes it easy for me to plug in the send from front of house and my instrument from my DI. Battery life seems very long. I charge it between gigs and have never had it run out of juice.
Zonda
2025-06-17 12:22:25
I do live sound, and this unit has a built in battery that charges via Usb type C.Very good for quick trouble shooting on stage when you have AUX sends issues .
Kevin S.
2025-06-06 14:18:04
I received my Donner Headphone Amp on August 9, 2025. It took two weeks to set up my church sound system with a dedicated auxiliary feed so I could hear all the band members. On October 27, 2025, I was in the middle of a church service when my headphone amp died. All I could do was pull out my In-Ear Monitors and do the best I could to get through the service. I charged the headphone amp that Saturday night as always, and all seemed in order during early morning practice. The headphone amp will not reproduce sound in either input channel, and the LED's battery status will not illuminate. I went online to see if I could return the headphone amp but saw the return window had expired. I have no other recourse but to purchase another headphone amp. I am greatly disappointed with this product as I was the one trying to get the rest of the praise team to switch over to in-ear monitors. needless to say I will not purchase another product from Donner.**UPDATE**I was in the process of packing my Donner Headphone amp to send it back. I noticed I had left the amp on for two days. Idecided to try charging the amp one last time and to my surprise, it starting charging the battery. I have used the Donner Headphone amp consistently for two months with no problems. I had heard a theory on battery memory where you have to completely discharge the battery before attempting to charge it completely; this may be the case. I now have no qualms in recommending this headphone amp to anyone and everyone. If you need a headphone amp with two input ports, this is the one you need. Thank you Donner for your patience.
Sanush
2025-05-19 15:40:28
Same as title. Overall really good. Plenty loud and clear, stereo and mono work well, battery life is good. I wish I opted for the single input version haha cause I don’t really ever use both channels, but snagged a deal on it :)
Adrian ronin
2025-05-11 12:20:53
Lo utilizo en mi Home studio para monitorearme, me gusta que puedo mandar mezcla mono o estéreo, también tiene una baterÃa interna y le dura bastante la pila, y cualquier detalle lo puedo conectar directo a la luz con un adaptador de 5v. Estoy muy satisfecho por que la calidad del sonido es muy buena.
Hugo M.
2025-03-20 15:19:16
No usa baterÃas y la nitidez es increÃble
couzfafa
2025-03-15 15:38:09
fonctionne très bien
Pasquale
2025-02-10 11:24:25
Utilizzo il prodotto come ampli per i miei ear monitor. Ottima funzionalità e totale assenza di rumore di fondo. Ne consiglio l'utilizzo esclusivamente con i cavi a corredo. Ho provato ad utilizzare connettori diversi, ma non ne garantiscono il corretto funzionamento.
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