original price tag at that time was around ¥7,000,000. Some notable users of the GX-1 include Richard D. James,. Stevie Wonder, Keith Emerson, John Paul Jones, and Benny Andersson of ABBA.<ref name=Lundy2007p3iii>{{cite book |chapter=III. Experience |first=Zeth |last=Lundy |date=2007 |title=Stevie Wonder's Songs in the Key of Life |publisher=Bloomsbury Publishing |id= |page=3-iii |quote={{smaller|This confused tiem of transition also coincided with Wonder's privileged acceleration to the cutting edge of synthesizer technology. He was one of the lucky few (along with ELP's Keith Emerson, Led Zeppelin's John Paul Jones and ABBA's Benny Andersson, among others) to obrain a Yamaha GX1, a test model synthesizer that had recently been issued in an extremely limited run.}} }}</ref> 1977 — EX-1, EX-2 The third generation of space-age stage Electone models. Original price tag was ¥3,600,000 for the EX-1, and ¥2,600,000 for the EX-2, so there a ¥1,000,000 difference between them. 1977 — E-70 One of the first home based organs to feature Yamaha's PASS (Pulse Analog Synthesis System) in a console cabinet. E-70's architecture resembles the famous CS-80 synthesizer. But it does not have any analog VCOs in it. The original price tag was ¥1,800,000. 1979 — CN-70 A single-keyboard model most likely marketed to music schools. 1980 — D-700 More advanced and the upgraded version of its predecessor models. 1983 — FS and FX series (FC/FE/FS/FX) Featured FM (Frequency Modulation) tone generators and the FX series featured the company's first digitally sampled sounds for the onboard percussion/rhythm units. The F series Electones were the first to allow users to digitally save registrations via pistons and then save them to RAM packs or an external disk drive unit: MDR-1. It is also known as the fourth generation of the space-age stage models, costing around ¥4,500,000. While the lower version of the FX-1, the FX-3, cost around ¥2,000,000. Along with the FS-30m, cost around ¥1,100,000. The FX-10 cost around ¥1,900,000, while the FX-20 costs around ¥2,200,000. Then, the FE-30m costs only ¥490,000. 1983 — CN-1000 A single chord organ made by Yamaha in their Electone models. 1985 — ME series A smaller and compact Electone series, starting from range ME-15 to ME-600. Discontinued in 1989. The highest model, the ME-600 costs around ¥580,000, while the lowest one, the ME-15, costs only ¥204,000. 1987 — HS and HX series (HA/HC/HE/HK/HS/HX) Electones became more digital here. It used more integrated circuit technology to make components smaller, and hence allowed for