I use it without problems, especially noise-free, on my old FM station K7 + blaupunkt. I put him a 32GB SD: but the few thousand songs present, only the 1st 999 are taken into account. (I would have to go through a 4 GB card for multitudes around this limitation ...) IR remote controls work, but I do not use too much. the ergonomics are not strong: hard to change directory (to change artist / album) without triggering erroneously FM frequency change. but it does not bother me too much I use it rather shuffle mode. no difficulty to pair via Bluetooth with a smartphone. then it manages to combine three transmission modes: the pieces on the phone are transmitted via Bluetooth to the transmitter that relays in FM, and I can control the play / stop and jumping after / before a piece to another with IR remote control. (And there is no limit to the number of pieces: the transmitter is not aware of the amount, he simply relays the playback controls and jumping)
