Teenage Engineering OB-4 Grey division department without needing to solve a

without needing to solve a brainteaser

adding stereo inputs for the first 3 channels

The name comes from the the four main functions available: Mix

With nothing plugged into an input

selected by a switch

Teenage Engineering OB-4 Grey division department without needing to solve aIntroducing OB4, the portable high fidelity loudspeaker with two 4'' bass drivers and a pair of neodymium tweeters that deliver crystal clear, open natural sound with 38 watts per channel that's around 100 decibels of incredible sounding stereo. listen using line input, bluetooth, FM radio and disk. the interface is minimal, with only the things you really need. yet if you look below the surface, there's a lot more than meets the eye. Natural