I would like to know some exact numbers on data audio rates etc.
Is Soundcloud still converting to 128kbps to provide a proper streaming?
Is it CBR (Constant Bit Rate) or VBR (Variable Bit Rate)?
Is it stereo or joint stereo?
Which encoders is used? (eg. LAME)
If i make my own file in 128kbps CBR Stereo with LAME, is it ensured that no converting is done to my track?
Best answer by Mathis
We're still converting into 128kbps stereo mp3 audio for the purpose of streaming. Every track that you upload, regardless of its previous audio format and quality, will be encoded. Hence, I'd recommend to upload a wav file to your SoundCloud account for the best possible encoding.
Apart from that, this article on Mixing / Mastering might be an interesting read for you.