Amazon’s music streaming platform is technically older than both Spotify and Apple Music, but until just a couple of years ago, it didn’t seem like the e-commerce giant was taking this thriving industry very seriously. That changed with the introduction of an Amazon Music Unlimited service separated from the company’s Prime subscription, which costs a traditional $9.99 a month.

Obviously, HD and Ultra HD are used as generic terms to describe advanced technologies and specifications most everyday consumers are probably not familiar with. Audiophiles will be happy to hear both quality ranges stand for lossless music, available with a depth of 16 bits, a minimum sample rate of 44.1 kHz, and an average bitrate of 850 kbps in “HD”, while the “Ultra HD” library consists of tracks upgraded to 24 bits, a sample rate of up to 192 kHz, and a 3730 kbps average bitrate.

Keep in mind that an Amazon Music HD subscription includes access to both the HD and Ultra HD libraries, setting you back $12.99 a month only if you’re an existing Prime member. Otherwise, you’ll have to pay $14.99, which is still 5 bucks lower than what Tidal charges for a similar HiFi individual plan. A family license is $19.99, compared to $29.99 for Tidal Family HiFi, while Spotify and Apple Music don’t have a lossless service tier yet.

If you haven’t subscribed to Amazon Music Unlimited before, you can even get a 90-day Amazon Music HD free trial for a limited time. Just remember your membership will be automatically renewed at the regular monthly fee once your complimentary 90 days are up if you don’t take the time to cancel it.