Thank you for the help! Just to confirm - this is the older generation Kindle Fire HD you are comparing it to ? i.e. the one at this link:
Kindle Fire HD Tablet [Previous Generation] That would be the one. It has good speakers but comparatively the PB has richer sounds.
Also - since you are a musician, any recommendations for good portable bluetooth speakers and this is not a dealbreaker but as a bonus - any good apps for making / listening to music - like grooveshark / itanpura on ipad ? Doesn't matter if not, speaker quality is what I'm after but would be nice bonus!
Listening to music on the PlayBook or any of the OS 10 devices is something that you can improve by using neutron player. I love having the ability to play around and get what I want from a sound. I record only voice snippets on the PB (simple with the voicenotes app) but all my editing and other serious tasks are taken care of on either my iMac or my MacBookPro via GarageBand. If you are Mac-based, those have worked best for me (haven't really looked for anything else, since I am not making money off of the music yet :D. If you are PC-based, I can look at some stuff that I have on my old Dell that I used before Mac'ing up :)
As for Bluetooth speakers, I'm using the WOWEE Gel Audio one. It was a gift from a friend, but it is amazing how much bass the gel manges to transmit to the surface :D, just bliss. For it's size, it does pack a punch. I think I saw it online for about 100$ (don't know how much you want to pay)