Aperture Science presents the patented new 'Beat Blasters'. Designed especially to ward off 'Portal Physic Sickness', these headphones also pump out up to 30,000 hertz of pure bass boosted music.
Available, never. They're for my GLaDOS cosplay at next MCM Telford Expo...and yes....they do work
Better to get the tidbits done quickly then have a break before I start collecting all of it together.