Top definition
A factory car stereo with unintelligible bass.

or...

A reference to a car notorious for negative bass, i.e. your Grandmother's Buick with all presets on AM talk radio.
Dude, crank the treble machine.

I'm not driving your treble machine, yo.
by moxie_mama April 19, 2010
Get the mug
Get a Treble Machine mug for your friend Julia.