All my music is recorded at 320kbps. If I activate iTunes Match and upload all my content, what will it be when I download it from the cloud to play on my iDevices??. I know that anything less than 256k will or should be converted to 256k, but what about stuff recorded at a higher bitrate??
If you get a Match, then iCloud will have the track in the iTunes datbase in iCloud which is 256kps AAC. If you get an Upload, the 320kps MP3 or AAC file will get uploaded as-is. But if it was a ALAC or AIFF file, I believe it will convert to 256kps AAC when it's uploaded.