Thanks for the answer. I am referring though to the bit depth, as in 16, 24 or 32 bits. It is true that each of the later will require a higher bitrate, which I can not control. But FLAC allows 24 and 32 bit audio. In a section of the user manual about external encoders it is stated that Radioboss delivers 16 bit pcm audio. Maybe that is my question. Is there a way to make it deliver 24 or 32 bit pcm audio? Hope this clarifies my question