Portable BANG 👑🎶

Pioneer of smallest portable sub-bass🎶🧠
World's deepest, most powerful and clean bass from a portable device🔊🎶
New acoustic design with much more effiency. Bypassed Thielles-Smalls rulles.
I was able to get 32-20000 hz at 88-100db in very small volumes 150-600 millilitres. 


Please listen to my videos only with headphones🎧, as most equipment cannot always reproduce low frequencies, especially phones. I follow Fletcher-Menson curves in any enclosure.