Audio-Technica ATR288W TwinMic VHF Wireless Microphone System with Battery Power - Ideal for Karaoke, Public Speaking, and Live Performances

In terms of sound quality, it sounded pretty decent. I tested it recording directly to my Canon 5D Mark III and the sound quality was pretty decent. Not a whole lot of output gain on this and no way to adjust it so had to turn up the preamp on the camera a bit. If you have used the preamp on Canon you pretty much know how bad it is so I did get a bit of hiss (nothing too bad that can't be cleaned up with denoiser in Premiere).Construction was not optimal. Mostly plastic and I guess that is to be expected at this price point. Getting the battery door open was a bit difficult on the unit I received. Almost felt like I was going to break it trying to get it opened. When I finally got it opened I realized I need to go buy some batteries since it uses 9v batteries. For some reason I was expecting AA's but its my fault for not reading the description properly. So for anyone thinking of buying this make sure you are aware of the battery type. I believe it claims about 8 hr battery life. I did not test this out myself. Most likely that number will be when using 9v alkaline or lithium. If you are using rechargeable you will likely get less. I ended up purchasing 2 energizer rechargeable 9v Batteries rated at 175mAh and with the devices running at 50mA would potentially get me a little over 3hrs at optimal settings. (This probably would have been fine for my purposes)It comes with a cold shoe adapter to attach to my camera and a belt clip for the transmitter. There is an antenna on the receiver but none on the transmitter as it uses the wire in the microphone as the antenna.Having said all that, I have returned mine for a refund due to electrical/rf interference I was experiencing. I work part time as a videographer recording behind the scenes footage of photo shoots and tutorial videos for a photographer. I wanted to use this mic for when I'm doing the tutorial part since I would typically only need to record one person's audio during those takes. A lav system would be ideal to get cleaner audio over my other stereo mic I use for pretty much everything else. During many of the tutorial videos I or the photographer I work with are often moving around and that's what drove me to finding a wireless lav system for those situations. When testing, I found that if the camera (where the receiver is stationed) and speaker are stationary, the audio was great. However, as I or the speaker moved around there would be areas in my environment that were prone for interference. By this I mean mostly loud hissing/static sounds and occasional popping. Because of this I opted to return the product for a refund.Now, I've read through a lot of the reviews and I've seen that lots of people are getting better results and that's great. I wish I could say the same. It's likely just my area or the environment I was using it in. (Studio environment with studio flash and other electrical equipment, located in Orange County California). For this I only gave it 3 stars. When I didn't get any static/interference the sound was great. However, I need something that will be consistent. Can't afford to have a shot ruined by audio interference. I'm recording things as they happen live so there are no retakes. Ultimately I only have myself to blame for trying to cheap out with a VHF system, but hey I'm still just starting out in videography (started as an intern, and now getting paid). My production value started out ok since I had a nice camera and its definitely improving. Now its just time to invest in a better microphone that I can trust to be consistent. I'm looking at the www.amazon.com/Samson-Mountable-Wireless-Lavalier-Microphone/dp/B0063GJINU/ref=sr_1_5?s=musical-instruments&ie=UTF8&qid=1389757842&sr=1-5&keywords=samson+airline+microfor my next attempt. I will likely be ordering that on my next paycheck and will review that once I get my hands on it. Hope this helps anyone looking at this. The one I bought was shipped and sold by Amazon (prime) and so I was able to return it for a full refund no problem. If you are on a budget, this may end up working out ok for you and if not Amazon's return policy if great.From 20 or 30' away, as I used it in a conference room, it worked very well and improved the audio recording compared to the recording function of the camcorder (which picked up all the surrounding paper shuffling, etc). The downside to using this (or any lapel mike) was it doesn't do as well as picking up surrounding conversations - such as questions during a face to face conference room training. In that case, I simply had to remind the key speaker to repeat the question and then answer it. There were some big advantages over the 20' wired lapel mike I used - mostly the absence of the cable. There there was little difference in audio quality. I also did a brief test recording audio in separate rooms, with a closed door - and while my test was far from complete, the audio was still good. I think some of the concerns are the claims that this can work from 300 feet. I can't say that it does or doesn't. The 9V batteries lasted a good 8 hours each. It was unclear to me (probably because I didn't real all the directions) if there was a warning to change the batteries or not (I'll have to go back and check) but, for my basic needs, this worked fine and the audio quality was good. Never had to change channels.i actually bought this from another place nice mics had the set for 4 years nowFor the price, this works great.Works fineNice and simple