The new tier of the company's music service will give people the chance to stream or download tracks at price undercutting rival Tidal.
While Amazon will charge $14.99 a month for the HD option - $12.99 for Amazon Prime customers - Tidal's own monthly Hi-Fi plan costs $19.99.
The online retailer's high definition catalogue - CD-quality it depth of 16 bits and a 44.1kHz sample rate - will include over 50 million songs, while somewhere between one million and 10 million can be played in Ultra HD (24-bit with sample rates from of 16 bits and a 44.1kHz sample rate).
They will be delivered in the lossless FLAC format, rather than Tidal's MQA format.
Amazon's VP of Music Steve Boom told The Verge: "It's a pretty big deal that one of the big three global streaming services is doing this -- we're the first one."