Right now, you can get an extended free trial for Amazon Music HD. Now you can try it out for 90 days, before you have to foot the bill of $12.99 per month (or $14.99 per month for non-Prime members). Giving you plenty of time to try out the service for yourself.
Amazon Music HD is a more premium music streaming service from Amazon. Giving you access to HD and Ultra HD music, which might not sound like a big deal, but listen to it on a good pair of headphones or speakers and you'll really notice the difference.
What exactly is HD music? Well, it's lossless audio. Typically, audio for streaming service is compressed, very heavily. This is so that the service runs better on slower networks and uses less data. With HD audio, it streams at 850kbps, instead of around 300kbps. That's more than double (actually closer to triple) the regular bit-rate. Which makes a big difference. It supports 16-bit/44.1kHz as well, and there are over 50 million songs from Amazon that streams at this bit-rate.
Now, Ultra HD music takes this to the extreme. It will stream at up to 3730Kbps, that is more than 10x the bit-rate of other streaming services. And it will do 24-bit/192kHz. There are millions of songs streaming at this rate, according to Amazon.
Otherwise, you are still getting the same experience as regular Amazon Music. With hundreds of millions of songs available for streaming. You can create your own playlists, also use radio stations that are curated to your own tastes in music, and even store music offline.
If you are a Prime member, it'll cost you $12.99 per month. If not, it'll be $14.99 per month. Considering all of the other stuff you get with Amazon Prime, it's worth signing up and you can sign up for that free trial here.
You can sign up for the free 90-day trial of Amazon Music HD here.