Korg Microkorg ( Missing Microphone) Analog Synth - AS ISC keys don't function. All other aspects of synth work. Seems to be an issue with the older Microkorgs and not too hard to fix A Korg Microkorg ( Missing Microphone) Analog Synth AS IS in Good condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting. We always picture any and all accessories too. What you see is what you will get so please