I've been using these microphones for a month now and the receiver battery is dead. The battery in the microphone is fine, but the receiver dies after a few minutes. The sound quality is pretty good and can be edited with a bit of post-processing. Balila sent me a replacement and it works GREAT. You seriously can't beat these mics for the price. Anything better costs more than twice as much and only has a nominal difference in sound quality and quite frankly only some quality of life improvements before compatibility. I've been working with audio/video for about 15 years and it's AMAZING!