Amazon HD and Ultra HD
Amazon HD is an automatic service containing all the releases delivered to Amazon that fall under their definition of “HD” (high quality / 16 bits).
Amazon Ultra HD is an automatic service containing all the releases delivered to Amazon that fall under their definition of “UHD” (ultra high quality / 24 bits)
MusicMyBand accepts both audio formats, 16 and 24 bits, therefore the HD and UHD audio master formats will be delivered and distributed to Amazon with the same quality.