Aerial 9 need a sub?

Most likely not unless, 1) its used for home theater, 2) you have a very large listening room or, 3) you listen to rock and you really love floor shaking bass. It also depends greatly on what amplifier it’s paired with. You’ll need a high power/current solid state amplifier to make use of their potential.

If it can actually reach 30Hz in-room at loud volumes, a sub isn’t needed if your content doesn’t have deep bass (movies, hip-hop, etc.), like most rock music has nothing below 40Hz. I always run subs in my setups as the content I consume benefits greatly from doing so.

jazz and vocals are what I like. I do play the occasional rock but not very often. I use a BAT VK500 amp.

A properly implemented sub will free up the amp from working to get those power hungry bass tones....and therefore the mids will become more accurate with greater ease.

what sub would you think of pairing with the Aerial 9?