Zen & the Art of Synthesiser Maintenance Updates https://zasm.earth Latest updates from ZASM. Korg Serial Numbers (later type) https://zasm.earth/korg-serials-later korg-serials-later Sat, 04 Jul 2026 08:18:43 +0100 Korg serial numbers for models introduced from c.1983–84 Korg Serial Numbers (model number types) https://zasm.earth/korg-serials-model korg-serials-model Sat, 04 Jul 2026 08:18:27 +0100 Korg serial numbers for models introduced from c.1977–83 Korg Serial Numbers (early types) https://zasm.earth/korg-serials-early korg-serials-early Sat, 04 Jul 2026 08:18:13 +0100 Korg serial numbers for models introduced up to c.1977 Korg MS-20 Serial Numbers and Characteristics https://zasm.earth/korg-ms20-serials-characteristics korg-ms20-serials-characteristics Sat, 04 Jul 2026 08:17:30 +0100 Trying to work out an MS-20 timescale if possible. Korg Duplicate Sales https://zasm.earth/korg-duplicate-sales korg-duplicate-sales Sat, 27 Jun 2026 01:07:20 +0100 An examination of some questionable practices in sales of old Korg synthesisers. Twynthesisers https://zasm.earth/twynthesisers twynthesisers Sat, 23 May 2026 08:08:03 +0100 Some duplication of MS-20s Early Korg Serials https://zasm.earth/korg-serials korg-serials Fri, 15 May 2026 03:12:05 +0100 An attempt to get a handle on some issues regarding early Korg synthesisers, which unfortunately developed into an analysis of their serial number systems in use up to about 1984. ELEX serial numbers https://zasm.earth/elex-serials elex-serials Mon, 19 Jan 2026 10:29:00 +0000 some notes about ELEX keyboards and their serial numbers A Spotter’s Guide to HIPs and Strings https://zasm.earth/hipstrs hipstrs Wed, 06 Aug 2025 03:48:44 +0100 combing the tangle of Hohner electronic pianos and string machines