The greatest tweak ever?

Fill your room with Helium ... you won't believe your ears.

These units are not that quiet, 

I have a whole home unit with ionizer and the air is fresher ,but to be honest room panels are night and day better . There is a slight improvement and m7n3 is dead quiet cleaning the whole house.,these smaller units are not totally quiet.

@rudyb 

You got it man...works something like the "light gas rail gun" the military has.

Oh wait, hydrogen is even lighter, except you'll always be thinking your listening to the finally of the 1812 overture.......DOH

As an aside this guy is probably a dentist that's been huffing nitrous for years.

Regards,

barts

Cliffs?

Great comments! All I can is that the best sound I ever heard at a rock concert was the Dead @ SUNY Binghamton , NY in 1977 & even though I had already gone beyond my pot smoking days, the auditorium was full of a combo of I’ll guess 75% pot smoke, 15% cigarette smoke & 10% of who knows what smoke?

of course there was no reference smoke free venue for comparison…….