You travel a lot - hence you seem to have curiosity - not you are curious
PS:
MQA: A new way of encoding high resolution music that is meant to convey exactly what was recorded in the studio
NAS: Network Addressable Storage - basically a box with hard drives in to back up your computers or music in this case. Can be fond by the Muso to enable you to play your music through the music from the NAS. Almost all control is via an iPAD/iPhone or similar. Basically all your music available through an App
DSP: Digital Signal Processing - a way of manipulating the source file to suit your tastes via filters, and/or to tune the signal to the amp/speakers, etc it is being played on. The Muso uses this to optimise the whole package to sound as close to the music source as possible given the laws of Physics
TIDAL: A high resolution version of Spotify ie. CD quality streaming via the internet to a Muso or similar. Subscriptions cost around £20/month but you get a huge collection of music you can listen to as you wish. Spotify is about £10/month. I use Spotify to explore music and then buy the CD if I like it enough.