Moog Music has announced that they are ending production of their Minimoog Model D synthesizer.

The Minimoog Model D was the world’s “first portable synthesizer.” It was originally in production until its discontinuation in 1981.

“Orders for the synthesizer quickly outpaced our initial estimates, leading to the addition of a night-shift to meet demand for the iconic instrument. Our parts-inventory for the Minimoog Model D project was originally expected to span multiple years of manufacturing, but is being consumed at a much higher rate than anticipated. Thus, this second historical production run of the Minimoog Model D will reach completion much earlier than intended, and this marks the final opportunity to acquire a new Minimoog Model D.”