Part boombox, part magic trick: the OB-4 continuously records whatever passes through it — Bluetooth, FM, or line-in — onto a rolling two-hour loop tape, so you can rewind live radio or replay a song you just missed the title of. Four tailor-engineered drivers push 76W through a flow-optimized bass reflex duct for sound that fills a room, not just a desk.

A spiral FM antenna hides in the handle, doubling as a stand, while a motorized volume knob and tape dial turn on their own as audio plays. Disk Mode adds generative ambient soundscapes, a mantra collection, and a metronome running up to 800 BPM.