KORG opsix Altered FM Synthesizer

Marsoni

M251S

$499.50

Get it in 3 business days with 1 day shipping. Friday, May 29

KORG opsix Altered FM SynthesizerThe opsix from Korg is classic digital FM synthesis reimagined. An altered six operator FM synthesiser, with an astonishingly accessible operator mixer and flexible sound engine well beyond traditional FM, this instrument widens the potential of digital synthesisers to their full potential. With a diversity of waveforms, operator modes that go beyond the realm of FM, and a filter that brings together a fusion of subtractive synthesis, opsix makes

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Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.

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Reviewed in the United States on February 26, 2024

Verified Purchase

Carl L. Bradley

Battle Creek, US

★★★★★ 1

Kinda flimsy…

Thought the assembly was metal, it’s some kind of PVC.

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Reviewed in the United States on September 22, 2025

Verified Purchase

Jeanne Irwin

Waukegan, US

★★★★★ 5

Lovely and sturdy for what I needed!

Size: 3 Set 4-Tier, Planks Not Included, Size: 3 Set 4-Tier, Planks Not Included

We LOVE these shelving brackets! We were moving our books from our office space to turn that room into a nursery and I needed something that would be sturdy and off the floor since my books were moving to our living room. These are extremely sturdy, and also go with our curtain rods and other furniture that has this industrial style. The instructions for assembly are simple and easy to follow, I would just ensure you have an extra set of hands (this isn’t a one person job) we ordered the 3 pack, but ended up only needing the two for the space on the wall and they still hold the weight well. Also this is a work in progress so please disregard that I don’t have the other two shelves here😂 Definitely a high quality and great looking alternative to some other brackets out there!

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Reviewed in the United States on January 17, 2026