iFinity Wireless Audio Transmitter/Receiver for Subwoofers and Surround Speakers

Just recieved my units yesterday, so keep in mind this review is on initial impressions and about 4 hours of testing. Saying that:This is the first wireless transmitter I have found that sends my LFE channel (subwoofer) across the room without distortion, humm or weird hitches. I was very nervous ordering these honestly because of a few things:1. The unit does look cheap, no getting around that, I hope the company does a redesign for them as they look like a homemade contraption. Getting rid of the cheap grey plastic for something sleeker would be a start. Additionally, I would suggest to the seller to stop including the RCA cables if you cant put quality ones into the box, they just lower the quality perception of the product. I will say the units are smaller than you think, the picture makes them look rather large, when in fact they are very tiny.2. The lack of Amazon prime and thus a easy return policy. Things like this are very hit and miss, I've tried 3 different wireless solutions, all ended up getting returned because they would either cut out or introduced noise into the signal (or worse, loss some of the signal, amazing how many of these wireless transmitters cant send information under 60hz). To the seller: Please consider becoming part of Prime or offering a better return policy, I almost avoided this product all together assuming it would be as bad as every other transmitter and I'd have a fight on my hands to return it. The only reason I tried yours was I have already test all the other ones for sale!So with those thoughts out of the way, let's get to the positives:1. The unit is transmitting the full signal. I did a full range test on the receiver as soon as it arrived, the product description is correct that its transmitting all the way down to 2hz. Very nice given all other units on amazon I tested had a hard drop off at 20hz. the importance of sub 20hz is likely marginal, however, I felt the difference between a straight wired sound vs this unit was barely noticeable, while other units there was something lacking.2. No drop outs or clicks or boops or any other weird signal distortion sounds. I placed the transmitter in several different areas, behind my receiver, next to a network switch, next to a Xbox One, next to an HTPC and directly behind our Sony X940c. No drops in signal. The receiver sat under the subwoofer which is 14ft away behind our couch.3. Unlike every other wireless unit I've tried this unit instantly turned on the subwoofer once an LFE signal was sent. Other units would often fail to turn on the sub from its autopower mode, or have a long delay. This one acts like a straight wire connection.4. The dual channel input and output work great for dual subs. I have run both of my subs connected to it, with my Denon x4200w calibrating each independently. No issues. Calibration distance came in at 23.5ft, so I'm guessing we are seeing a 10-20ms delay in the signal (wired distance came in at 4ft)I will keep this review updated based on how the product holds together over the next year. Needless to say, I recommend the unit over any other wireless units currently for sale on amazon or at Best Buy (Here is looking at you, you horrible Rocketfish transmitter). I hope the seller makes it easier for people to trust the product and brand by offering it with amazons return service.

As many other reviewers have indicated, this device works very well. Its easy to pair the transmitter and receiver, and the sound quality seems very good. I measured it down about one dB at 20KHz, and flat down to 7 Hz (I didn't look lower than that.) The receiver AC output voltage for each channel is an exact match for the transmitter input voltage. I thought the supplied RCA cables were fine -- maybe they've upgraded them after getting so many negative reviews. Based on all this I would give it 5 stars, but . . .The one problem is that the receiver output has a couple of volts DC on top of it, which looks like the result of operating with a single ended output device without a coupling capacitor to block DC. This is fine as long as your amplifier has a blocking capacitor at the input, but otherwise your amp will be dealing with a big DC input voltage and maybe even trying to output that voltage, which would push woofers to their limit, to say the least. For that flaw, only 4 stars!Follow-up 12-19-21 I've gone back and measured the output of this device again, based on some other reviews discussing possible limits to its maximum input and output signal voltages. Here's the thing, the maximum input voltage it can handle is 1.0 v rms. After that the output signal begins to clip. This could be a problem because many setups will use input voltages up to 2 volts or more. The distortion if you exceed the 1 volt input limit would be quite severe.Secondly, other reviews include discussions of the time delay this device puts into the system. I measured it and it is a big 31.3 msec between an input and an output signal. This could be a problem if you're trying to time align your woofer/subwoofer, or at least your AV receiver would have to be able to compensate for this large signal delay. For what its worth, the output signal is also inverted, although that probably hardly matters with a 31 msec delay!

Bought one set for a remote subwoofer installation, used the mono port only, which is the left RCA terminal; worked perfectly. Really just basically plug and play. It is true, as other mention, that the little gray boxes look somewhat cheap, however, they are small and can be discretely placed out of sight. I didn't encounter any problems with latency (delay) or intermitting signal, it has been very steady, and, in my case, contrary to what other reviewers have said, I had no problem with these working without a line of sight. The units are light, easily attachable with Scotch's velcro-type fasteners, the transmitter under the shelf where my AVR sits and the receiver tucked behind the subwoofer with all sorts of "obstacles" in between them. I am ordering another one for my fourth subwoofer (2nd wireless). Onto of everything it is the least expensive solution available of this type and has no protruding antennae, still works like a charm. Some reviewers mention that it comes with cheap cables; they are not bad, plus, I didn't expect it to come with any RCA cables. Really, the only con (for me) is the super bright red status light, which in dark environments is quite noticeable. You can always place a piece of tape on top if it becomes a nuisance. Five stars for functionality regardless of the minor cons mentioned. Overall, great product, very happy with it.