headphones dubbed Guardian, which put an interesting twist on limiting the volume that one hears. Rather than including some form of internal volume diminisher, these cans sport red and green LCDs on an earcup which light up depending on how loud you've got the music cranked. As you'd expect, the green LED signifies that the volume within is perfectly acceptable, while nudging that knob to 11 will cue the red light to glow, consequently leading your paranoid mother to remove them from your head entirely. Yeah, you'll have to hand over $39.95 to pick 'em up, but trust us, it's for your own good.
[Via I4U News]