Multichannel Wireless Audio Receiver/Amplifier for Making Passive Speakers Wireless - Model 880, Compatible with Model 800 Multi-Channel Transmitter, Better-Than Bluetooth Digital Wireless

This replaced my speakers wires for my surrounds and surround rears when i moved... and they do a great job... compared to the first set.. (the little dual kit).. these are a better option... and compared to older kits.. this one comes with a better manual... your 5ghz wifi channel may need adjustment... the harder you push the little amp in them.. the hotter they get.. and they will burn out on you.... don't use them on the older 6ohm woofer/tweeter box speakers... they will last for about 3 years... but the set on my rears have been going strong..

I purchased the transmitter along with an 800 Receiver and two 880 receivers so I could avoid running speaker wire across two doorways. The concept sounds amazing, but the reality is that the equipment doesn't work as described when you live in an area where there are other wireless networks. When I hooked the equipment up, the speakers had a high-pitched buzz and the music kept dropping out. I consulted the troubleshooting guide and slowly worked my way through all of the recommended fixes. I relocated the equipment, I added surge protectors, I moved my wireless network to a different band (which slowed down my network and caused problems with the rest of my wireless equipment that took some time to resolve). I upgraded all of the speaker wire and re configured my stereo setup. But none of these fixed the problem, so I called Amphony technical support. When I described the situation and all of the actions I had already taken, the tech support guy said it sounds like the equipment is working as expected and that because I live in a high-rise in the middle of a densely populated city, there is just too much interference for this equipment to work. Unfortunately, by the time I got through all of the troubleshooting and equipment configuration, I was already past the 30 day return window. Amphony told me that no customer would want to purchase equipment that had already been in use by another customer for over 30 days. I honestly had to laugh at that. The equipment is cheap plastic like something you would buy at Radio Shack for $15 and the speajker wire they send is low quality. I'm out $300 and doubt I'll be able to sell this equipment on eBay. I'm sure Amphony was just glad to make the sale and it doesn't surprise me they don't want their equipment back. If you live in a remote area, this might work for you.

BUYER BEWARE. No response on the 1 star so I thought I'd get your attention with a 5 star rating. Bought two different sets and both started making loud noises (pops, squeals, etc.) with in months and makes systems unusable. Before buying, try the customer service number, you'll find out it is always busy. Try the website for comments/complaints and the form never goes throught (and you waste even more time). Try commenting on Amazon and you'll hear crickets.

It work, but there is too much noise. I had to replace the system with a better one.

Parts of me want to give this 5 stars, because it solved a critical problem I had and I am now happy with the final result. Music and surround sound from movies now work perfectly on two speakers for which I could not run wires back to the AVR. Other parts of me want to give it 2 stars, because it was such a hassle to get it working and the 800 transmitter meant to go with this pair of 880s did not work so well.I decided to stick with 4 stars for this unit, docking 1 for a hum in the working configuration (see below), and I'll separately rate the 800 more poorly (but it has its strong points too). Because you need a transmitter with these, be aware of this.My configuration: I live in a rural area, so there is no interference from neighbors. I don't know if that matters, but I have seen some reviews here with range or interference and suspect that might be why. I have an Onkyo AVR with hard-wired speakers for center and front L and R. I needed a way to get a signal to a smaller pair of Klipsch R41M surround speakers located on the other end of a room, about 20' and 30' away (one on the same wall, one diagonally opposite). Running wires without their looking terrible or spending thousands of dollars was impossible. I did already have electrical outlets near where I wanted the speakers -- obviously, you do need to plug in the receiver for power.I originally ordered one 800 transmitter and two 880 receivers, one for each surround speaker. After pairing them, which just took a few seconds, everything seemed to work. Amazing, right? Well, except when I moved everything to its final position, I found I had to ensure the transmitter and receiver were within line of sight, which complicated the layout a little bit. Still not too bad. Then I found that if anyone walked near the speakers, that also knocked out the audio (not permanently, just while the person was in the way). So it was fine for watching a movie with everyone sitting down several feet from the surround speakers, but if anyone got up and walked by a speaker, the audio would cut out while their body blocked the signal. For music especially, which treats the surround speakers as just another left and right pair, this was really bad.I contacted the company for support. They eventually suggested I try the black TX1 transmitter with the old iPhone mount (yeah, weird to include an old iPhone mount and probably the main reason I didn't go with that in the first place) instead of the 800 (as of this writing, that is not available as a stand-alone purchase on Amazon, but looks like the unit in the combo package at https://www.amazon.com/Wireless-Amplifiers-Model-Better-than-Bluetooth/dp/B01ARM0VE0). Unlike the 800, this unit does not suffer cut-outs when people walked around them.The only downside, and the reason for 4 stars instead 5, is after switching to the TX1, there was a hum, a hum that was not there with the 800. It's not so loud that you'll notice it much while audio is playing, but it's annoying if the Amphony system is on but no audio is playing. You can hear it anywhere in the room, about as loud as a refrigerator running -- not terrible, but not ideal. So, it's either use the 800 and have the audio cut out when people mull around, or use the TX1 and get a modest hum.Work-arounds and my final solution:1. If you can put the 800 and 880 so nobody can get between them, true line-of-sight (like ceiling mounts), then there's really no problem at all. Just be aware that the 800 -> 880 connection is very sensitive to anything getting between them, especially at 20-30' distance.2. If you have an AVR with adjustable volumes per speaker (I think most AVRs do support this), you can turn the TX1 volume down (the silver dial on the front of the unit), turn down the volume on your wired speakers down in your AVR's setup system, and turn up the volume output to the Amphony-connected speakers in your AVR's setup system. This mostly eliminates the hum, at the cost of effectively lowering the total volume of your system. This is the path I took, having many watts of volume to spare from the Onkyo.3. The manufacturer offered another solution involving opening the TX1 and making a change but said this would void the warranty. If it weren't new and still under warranty, I might try this, but option #2 worked well enough for me that I decided against this. However, if you're desperate to clear a hum, contact the manufacturer support and ask about this. The problem, at least for me, was in the TX1 NOT in the 880 receivers.