Upbeat Audio T613-BNC Boostaroo

I bought this because I do a lot of transcribing and sometimes the audios I transcribe are faint. Someone at my company said this was good and I bought it. It seemed good for awhile, maybe 5 months or so and then it starting cutting out. And then it would mess with my headphones where I couldn't hear from one side and it became real finicky. Sometimes the middle jack would work. Other times it was the left or the right. What a pain in the neck. So I decided to not use it but we are planning on a vacation and I thought, maybe I got a bad one, so I ordered another one. I mean I just got it less than an hour ago and I was excited. My kids were going to be able to watch the movie in the car without us listening to it. WRONG. I unpacked it and put new batteries in. I plugged it into my computer and then my ear buds. It was so staticky and I couldn't make out what I was listening to. Then, I unplugged it from the laptop and tested my ear buds. My ear buds were fine. I even put in the old Boostaroo I had with those same batteries and I could hear fine, with the fact that it was finicky in how the cord was. I took the new batteries out of the old one and again into the new one. This time, I couldn't hardly hear anything and that's with my laptop's volume to max. Ridiculous. It did NOT boost the sound, rather the total opposite. I am deeply disappointed. Thankfully I can return the one I just bought, but I will not get another one. No thank you.