Didn't knew the buttons where also aluminium.
My bad!
I heard about those famous artists. But never really seen it. Besides some fancy youtube channels. Stating how innovative the OP-1 is.
All i know is that it starred in that one Swedish house mafia music video. But that song was not actually made with the OP-1.
I will state it is a cool toy.
I am a sucker for great product design and advertising. But this is not it.
If you like sound engineering you should look into behringer,
Semi-Modular Desktop Synthesiser Analogue signal path, 2 VCOs with CEM3340 chips, Continuous transition between 5 waveforms, Paraphony mode for two-part sounds, Multimode VCF with resonance, 2 Analogue ADSR envelopes for VCF and VCA, Flexible LFO...
www.thomann.de
Lot of possibilities dirt cheap.