I ordered from Revain and received the PDA4BU quickly. I connected it and it works. I spent some time trying to connect Bluetooth to my desktop computer, but I think the problem was mostly with the computer. Once it's running, it sounds nice and clean. My Bluetooth USB chip, which transfers data from the computer, is about 10 feet from the Bluetooth antenna on the back of the PDA4BU. In my 15 x 25 foot living room it fills the room with sound - I can play it really loud but basically just wanted a Bluetooth receiver with an optical input and a small footprint. It measures 10.25 inches wide, 10 inches deep and 3.25 inches high. The remote control is not very helpful. The FM radio is difficult to use because it has no knob to tune. In fact, the radio is almost impossible to use. The instruction manual is very simple and explains almost nothing. I tried optical input and it worked great. I haven't tried many other inputs. Banana plugs 4 rubber feet oddly don't ensure the device sits flat, it wobbles on a shelf 30 inch cable. long, but I can't turn it on at all. It's not a replacement for my big receiver, but the Bluetooth upgrades my stereo. Update 1: Remote Control - The receiver will not turn on when the switch on the front of the receiver is off. It adjusts the volume, but only up to the level on the receiver's volume control. It works in bluetooth mode (at least for me) to switch to the next song. Registration. Seems 1 year warranty registration is complete, you should post a review of a product I have never seen. do before. You must prove that you wrote the review, either with a screenshot or the URL of the review. I don't like it but it extends the warranty by 3 months. I could find a way to bypass this requirement. I like the receiver, I left it on in bluetooth mode for 8 hours and it worked fine. I built my desktop computer about 7 years ago so it didn't have built in bluetooth. I'm using a Bluetooth USB driver (about the size of a nickel) on an extension cord over the computer. The volume is probably related to the size/quality of your speakers. I just finished building my passive bookshelf speakers which is why I bought this item in the first place. I'm happy so far.
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