Retekess TT117 Tour Guide System, Church Translation System Long Range 80m, Stereo, AA Battery, Translator Device for Conference (1 TX 10 RX)

I have an AV Production company that has a large set of the name brand devices which sell for $400/receiver. I recently had a triple booking over this past week, and while I could split my expensive set into two I needed a third system to cover all my events. Since one of my events was much more basic, I decided to give these a try instead of springing for more of the expensive ones. The price was too good not to try.I was simply blown away by the quality of the audio on these. We used the line-in port to feed the transmitter from our sound board, and just clipped the transmitter pack to a mic stand about 7 feet off the ground. No antenna boosting or anything like that - plug and play. I could walk hundreds of feet away and listen to static free high quality speech and music on all the receivers. We used these for the Spanish language interpreter at the event, and the attendees who utilized the system were all very very pleased with the sound quality and ease of use.For our setup, a few notes: My rave review is utilizing our system of a professional audio mixer with a professional audio engineer, outputting excellent quality audio directly into the "line-in" on this device. No settings needed to be changed on the device. We did provide reasonable quality headphones with each pack to all of our users - which is something we do for all these types of systems as the single earpiece is not always appreciated by the people who need to utilize the interpreter systems. So while I strongly recommend this product, I did not test or use it with either the included mic or the included ear-pieces. We use the very basic Sony ZX-110 headphones with them, and people are very happy with the quality. Our Mixer for this event was an Allen&Heath DLive.Because it is hard to find on the listing: These devices do input and transmit/playback stereo. They operate on 902-928Mhz band, which is totally fine/legal to use in the USA. They have 2 inputs on the top, one for mic (with a very basic pre-amp) and one stereo 3.5mm TRS ("Mini Jack"). This jack can take a regular headphone type cable input. We did not need to scan, sync, or setup our devices in anyway when they arrived, they were good to go. Each unit - both transmitters and receivers - ships with a retractable USB-A to USB-C cable for charging. I did not test to see if these cables are capable of data transfer, but I doubt it. Charge only. They do ship with basic 1-sided ear sets, I did not test those ear-sets for quality. The units will operate while plugged in to charge, so you can use them while they are plugged in for longer events. I did not really test the battery life, but we did not have anyone say their battery died during this event. We had three back to back to back 8-10 hour days, but I do not know if the Spanish language translator was actually translating/ broadcasting for the entire time.From my use, I really like and strongly recommend this system. I like it for the ease of use, great price, and for the quality of the audio. I am really happy with them, and my client was too. I will likely get a few more sets to have on hand.

I was skeptical but these are working out perfectly. We use them at church; the sound is perfect, and connecting the chanels is easy. Definitely recommend this product. Our church building was previously a movie theatre with a capacity of over 1000 with a very high ceiling. These work perfectly without interference.

I recommend

Todo se bien

We have had a few ideas of how to put this to work for us, but regardless what we land on, it has passed the testing phase. This set is awesome, allowing single transmission to multiple receivers simultaneously in real time. I didn't notice much lag or vocal drop until pushing limits on distance (over ~300 feet of wide open space) or obstructions (which it not designed for). Even at the distance, that was impressive for me and I wasn't expecting signal to penetrate walls. The design is simple and straightforward, allowing variable volume control (on both units) and channel selection, sound is crisp, mic pickup is sensitive and somewhat noise canceling, meaning it blocks wind alright. Now we just need to figure out our specific application, but once we do, these will perform.

This is a very generous kit of equipment to deck out a tour group, gathering or even other more creative uses. Being able to talk to 10 people over half a football field away is great, and you can set channels to only broadcast to certain people when needed. They seem to emphasize this as translation equipment since you could have several people talking (if you order more receivers) and only people set to the pre-agreed channel would hear each person. So you could have English as channel 1, French are channel 2, etc. up for 17. But with 1 receiver and 10 transmitters in this kit, it also works great as a simple way to keep a tour group together or run an event. Sound quality felt great, everyone could understand everything, and within a bigger building, transmission was not an issue at all. The devices are well built and easy to use. I kind of wish the transmitter and receivers were differently shaped or somehow differentiated, they're so similar it's very easy to give the transmitter to someone by accident. But that's a small matter, and I see why they chose to make the set matching. In terms of function, these are excellent and will hold up well for schools, churches or any organizations that need to talk to several people at once. And each receiver having earphones means no one needs to hear a large buzz of talking voices, very neat way to handle communication.

We used it for translation in the church meeting. This is the best after we tried some other products.

There is an annoying buzz on the receiver.