The first collaboration between Teenage Engineering and Off-White is a remix of the OB-4 speaker and a capsule apparel collection. The late Virgil Abloh contributed to the OB-4's design, adding a bright orange colorway and Off-White branding. The OB-4 has FM radio, Bluetooth, and a line-in jack, and "memorizes" everything played through it with an endless looping feature. The OB-4's disk mode is an experimental aural zone with three settings: Ambient, metronome, and karma. Ambient is a background filler made from clips of radio broadcasts; metronome is a high-quality stereo recording of an analog metronome from one to 800 BPM; and karma features remixes of spiritual sounds and chants. The Off-White OB-4 includes exclusive tracks from SK Kakraba, one of the last remaining builders and master players of the gyil, a traditional instrument from Ghana.