Synthesizer Freaks:
https://www.facebook.com/groups/synthesizer.freaks
Synthesizers and Drum Machines:
https://www.facebook.com/groups/1082273058488596
Vintage Synth Repair And Mods:
https://www.facebook.com/groups/vintagesynthrepair
Synth Masters of the Universe:
https://www.facebook.com/groups/176962603035858
Ensoniq ESQ-1 ESQ-M SQ-80 Owner/Fan:
https://www.facebook.com/groups/112719509220005
Sequential Circuits Prophet-5:
https://www.facebook.com/groups/463923000385522
Roland JX10, MKS70 & JX8P:
https://www.facebook.com/groups/983499905023030
Juno 60:
https://www.facebook.com/groups/1028326427299399
Sampler & Synth Exchange:
https://www.facebook.com/groups/samplersynthexchange
DX7:
https://www.facebook.com/groups/686190404823269
Kawai K4/K4r:
https://www.facebook.com/groups/657342007681547
Korg DSS-1
https://www.facebook.com/groups/354416554922809
Akai AX/VX:
https://www.facebook.com/groups/875052395875471
Yamaha CS Series Vintage Synthesizers:
https://www.facebook.com/groups/1600052226719709
Yamaha TX81Z:
https://www.facebook.com/groups/420398847997855
Korg DW8000/EX-8000: