A great plugin by Oscillot. Saves time listening on multiple systems and although nothing beats being in the real physical space, their emus of several playback devices / media is telling enough for you to do your job better (if your job is mixing a song, haha!)

New speakers will be allegedly added over time free of charge which adds relevance and longevity to the buy, as people change the way they consume media.

Mix in mono,

-Tokyo