FS-100 / FS-200 / FS-300 / FS-500 (1983, export model) FX-1 / FX-3 / FX-10 / FX-20 (1983–1987/1988) HA/HC/HE/HK/HS/HX series (AWM(PCM) + FM) HA-10 (1988–2001, 1manual) HC-1 / HC-3 (1989–1994/1993) HE-5 (1988–1994) HK-10 (1988–1995) HS-4 / HS-5 / HS-6 / HS-7 / HS-8 (1987–1992) HX System1 (1987–1992) HX-3 / HX-5 (1987–1992) HX-1S (1989) CHX-1 (1987, export model) MC Series MC-200 / MC-400 / MC-600 ME series ME-400 / ME-600 (1985–1987) ME-15 / ME-35 / ME-55 (1986–1989, portable keyboard style) MR series MR-1 (1983, export model, single manual) T series T-30 / T-60 (1966) US series US-1 (1988, export model) US-1000 (1988, export model, single manual) Combo organs A-3 (1966) YC series YC-10 (1969) YC-20 (1970) YC-30 (1970) YC-25D (1972) YC-45D (1972) Reface series (digital) Reface YC Ensemble keyboards SS30 (1977, string ensemble) CE20 / CE25 (1982) — cost down preset version of FM synth GS1 / GS2. SY20 (1982, ensemble synthesizer for classroom) SK series SK10 (1979, organ/string/brass) SK15 (1981, organ/poly-synth/string) SK20 (1980, organ/poly-synth) SK30 (1980, organ/poly-synth/solo-synth) SK50D (1980, 2 manuals organ/poly-synth/solo-synth/bass) Synthesizers Magna organ (1935–?) — See #Magna Organ. GX GX-1 (1973/1975–1982) — 1st polyphonic synthesizer of Yamaha, released as Electone electronic organ SY series SY-1 (1974, solo part of GX-1, monophonic synth with initial/after touch) SY-2 (c. 1975, a successor of SY-1) for the workstations, see below CS series (monophonic) CS-01 (1982, shoulder keyboard, with breath controller) CS-5 (1978) CS-10 (1977) CS-15 (1978, monophonic dual channel) CS-15D (1978, monophonic dual channel) CS-20M (1979, monophonic, patch memory) CS-30 / CS30L (1977, monophonic dual modules, L = live performance version without analog seq.) CS series (polyphonic) CS-40M (1979, 2-voice, patch memory) CS-50 (1977, 4-voice) CS-60 (1977, 8-voice) CS-70M (1981, 6-voice dual channel, patch memory, polyphonic seq.) CS-80 (1976, 8-voice dual channel) DX/TX series DX1 (1983, dual DX7 with display) DX5 (1985, dual DX7) DX7 / DX7S (1983/1987) DX7IID / DX7IIFD (1986) DX7IIFD centennial / DX7IIC (1987) DX9 (1983, 4op FM) DX11 (1987, 4op FM) TX816 — clustering rack version of 8× DX7 TX7 (1985) — desktop module version of DX7 TX802 — rack mount version of DX7II except for unison TX81Z (1987) — rack mount versions of DX11 DX21 (1985, 4op FM) DX27 / DX27S / SDX27S (1985/1986/1986, S = speakers, SDX = classroom model ?) DX100 (1985, 4op FM, DX27 with mini keyboard) VL/VP series (virtual acoustic) VL1 / VL1m (1993/1994, Self oscillation/Virtual Acoustic synthesizer) VL7 / VL70m (1994/1996,