The list below is complete for solid state integrated amplifiers 1967 - 2000. And solid state separates 1968 - 1979.
--- SEPARATES ---
Pre Amplifiers
1968 TC-505 (pre amplifier w/tuner: pre-ceiver) (JDM)
1970 CA-606 (JDM)
Power Amplifiers
1968 BA-60 20 watts
1968 BA-90 28 watts
1971 BA-100 30 watts (JDM)
1970 BA-150 45 watts (JDM)
Pre Amplifiers
"Definition Series"
1975 CA-3000
"Professional Series"
1976 CA-2000
Power Amplifiers
"Definition Series"
1975 BA-3000 170 watts
1975 BA-5000 300 watts
"Professional Series"
1976 BA-2000 110 watts
1975 BA-1000 45 watts (VFET amplifier)
Pre Amplifier
1979 CA-F1
Power Amplifier
1979 BA-F1 110 Watts
--- INTEGRATED ---
--- FIRST GENERATION ---
1967 AU-777 25 watts
1968 AU-222 18 watts
1968 AU-555 20 watts
1969 AU-777D 30 watts (JDM version of AU-777A)
1969 AU-777A 30 watts
1970 AU-555A 25 watts
1970 AU-666 35 watts
1970 AU-888 45 watts
1970 AU-999 50 watts
1971 AU-101 15 watts
1972 AU-505 12 watts
1973 AU-2000 13 watts (JDM version AU-505)
--- SECOND GENERATION ---
1972 AU-6500 30 watts
1972 AU-7500 32 watts
1972 AU-9500 75 watts
1973 AU-8500 60 watts
1973 QA-7000 12 watts (QUAD)
1974 AU-22 13 watts (JDM)
1974 AU-33 20 watts (JDM)
1974 AU-2200 10 watts
1974 AU-4400 20 watts
1974 AU-5500 35 watts
1974 AU-6600 42 watts
1974 AU-7700 54 watts
1975 AU-7900 80 watts
1975 AU-3900 25 watts
1975 AU-4900 38 watts
1975 AU-5900 45 watts
1975 AU-6900 60 watts
1976 AU-2900 15 watts
1975 AU-1100 22 watts (JDM)
1975 AU-3300 35 watts (JDM)
1975 AU-1500 22 watts (JDM)
1975 AU-3500 35 watts (JDM)
"Professional Series"
1975 AU-9900 80 watts
1975 AU-11000 110 watts
1975 AU-20000 170 watts
1977 AU-9900A 80 watts
1977 AU-11000A 110 watts
1977 AU-10000 110 watts (JDM)
--- THIRD GENERATION ---
1977 AU-207 30 watts (JDM version of AU-217)
1977 AU-307 50 wats (JDM version of AU-317)
1977 AU-507 60 watts (JDM version of AU-417)
1976 AU-607 65 watts (JDM version of AU-517)
1976 AU-707 85 watts (JDM version of AU-717)
1977 AU-117 15 watts
1977 AU-217 30 watts
1977 AU-317 50 watts
1977 AU-417 65 watts
1977 AU-517 65 watts
1977 AU-717 85 watts
1977 AU-710 85 watts (AAFES version of AU-717)
1978 AU-D607 70 watts (JDM version of AU-519)
1978 AU-D707 90 watts (JDM version of AU-819)
1978 AU-D907 100 watts (JDM version of AU-919)
1978 AU-D907 Limited 100 watts (JDM)
1978 AU-919 100 watts
1979 AU-107ii 25 watts (JDM version of AU-117ii)
1979 AU-207ii 40 watts (JDM version of AU-217ii)
1979 AU-307ii 60 watts (JDM version of AU-317ii)
1979 AU-117ii 25 watts
1979 AU-217ii 40 watts
1979 AU-317ii 60 watts
1979 AU-417 65 watts
1979 AU-519 70 watts
1979 AU-719 90 watts
1979 AU-819 90 watts
--- FOURTH GENERATION ---
"Direct Coupled - Diamond Differential"
1978 AU-X1 160 watts (JDM) (and international)
"Direct Coupled - Diamond Differential - Super FeedForward"
1980 AU-D607F 75 watts (JDM)
1980 AU-D707F 95 watts (JDM)
1980 AU-D907F 130 watts (JDM)
"Direct Coupled"
1982 AU-D5 (B)(S) 65 watts
1982 AU-D7 (B)(S) 80 watts
"Direct Coupled - Diamond Differential - Super FeedForward"
1980 AU-D9 95 watts
1980 AU-D11 120 watts
"Direct Coupled"
1980 A-40 25 watts
1980 A-60 45 watts
1980 A-80 65 watts
"Direct Coupled - Diamond Differential - Super FeedForward"
"Extra" = copper plated chassis and non-magnetic elements
1981 AU-D607F Extra 80 watts (JDM)
1981 AU-D707F Extra 100 watts (JDM)
1981 AU-D907F Extra 130 watts (JDM)
"Direct Coupled - Diamond Differential - Super FeedForward"
1981 AU-X11 160 watts (JDM)
"Direct Coupled - Super FeedForward"
1981 AU-D55F 50 watt (JDM version of AU-D33)
"Direct Coupled"
1982 A-5 (B)(S) 25 watts
1982 A-7 (B)(S) 45 watts
1982 A-9 (B)(S) 65 watts
"Direct Coupled"
1982 A-500 (B)(S) 30 watts
1982 A-501 30 watts
1982 A-Classique501 30 watts
1982 A-505 30 watts
1982 A-510 (silver and black) 30 watts
1982 A-700 55 watts
1982 A-707 50 watts
1982 A-900 70 watts
1982 A-909 70 watts
1982 A-930P 70 watts
1982 A-1000 100 watts
1982 A-1001 100 watts
1982 A-1010 100 watts
1982 A-1100 100 watts
1982 A-1100P 100 watts
1982 A-1100R 100 watts
1982 A-1110 100 watts
1982 A-1130 100 watts
1982 A-1130P 100 watts
1982 A-1200 125 watts
1982 A-1200P 125 watts
1982 A-1200R 125 watts
1982 A-1230 125 watts
1982 A-1230P 125 watts
1982 A-1500R 160 watts
"Direct Coupled"
1983 AU-M7 25 watts
1983 AU-M70 25 watts
1983 AU-M77 25 watts
"Direct Coupled"
1983 A-M800 25 watts
1983 A-M9 70 watts
"Direct Coupled - Super FeedForward"
This group received notable press attention and a Wikipedia mention
1983 AU-D101 30 watts (UK/EUR 220/240V)
1983 AU-D22 35 watts
1983 AU-D33 50 watts
"Direct Coupled - Super FeedForward"
1983 AU-D55X 70 watts
"Direct Coupled - Super Ground Free?"
1983 AU-D77X 110 watts
--- FIFTH GENERATION --- BIRTH OF X-BALANCED
"Direct Coupled - Diamond Differential - Ground Free (The birth of X Balanced (in an integrated))"
1983 *AU-D11ii 130 watts -The AU-D11 II is a special version of the AU-D707X- MORE Here
"Direct Coupled - Diamond Differential - Super FeedForward - Ground Free"
"Extra" = copper plated chassis and non-magnetic elements
1983 AU-D607G Extra 90 watts (JDM)
1983 AU-D707G Extra 110 watts (JDM)
1983 AU-D907G Extra 130 watts JDM)
"Direct Coupled - Diamond Differential - Ground Free - X Balanced"
1984 AU-D607X 90 watts (JDM)
1984 AU-D707X 130 watts (JDM)
1984 AU-D907X 160 watts (JDM)
"Direct Coupled - Ground Free - X Balanced"
1984 AU-G11X 25 watts
1984 AU-G33X 45 watts
1984 AU-G55X 65 watts
1984 AU-G77X 110 watts
1984 AU-G99X 160 watts
"Direct Coupled - Ground Free - X Balanced"
1984 AU-G30X 45 watts
1984 AU-G50X 45 watts
1984 AU-G90X 130 watts
"Direct Coupled - Twin Diamond X Balanced"
1984 AU-D607X Decade 90 watts (JDM)
1984 AU-D707X Decade 130 watts (JDM)
1984 AU-D907X Decade 160 watts (JDM)
"Based on the circuit technology and know-how up to that time...developed through uncompromising selection of parts, improvement and hearing test." This amplifier would become the foundation for the final and last generation of Sansui amplifiers - The Alpha’s
1985 AU-X111MOS Vintage 110 watts (JDM)
"Direct Coupled"
1985 A-500 30 watts
"Direct Coupled"
1985 A-710 55 watts
1985 A-730 55 watts
1985 A-770 55 watts
"Direct Coupled"
1985 A-M90 70 watts
1985 A-M900 70 watts
1985 A-M99 70 watts
"Direct Coupled - Twin Diamond X Balanced - Compact Disc direct input"
1986 AU-D707XCD Decade 130 watts (JDM)
--- SIXTH GENERATION --- THE ALPHA GENERATION
"Direct Coupled - Alpha"
1986 AU-a307 65 watts (JDM)
1986 AU-a507 80 watts (JDM)
"Direct Coupled - Alpha X Balanced"
1986 AU-a607 90 watts (JDM)
1986 AU-a707 130 watts (JDM)
1986 AU-a907 180 watts (JDM)
"Direct Coupled - Alpha"
1987 AU-a307i 65 watts (JDM)
1987 AU-a507i 80 watts (JDM)
"Direct Coupled - Alpha - Custom Capacitors"
1987 AU-a607i 90 watts (JDM)
1987 AU-a707i 130 watts (JDM)
1987 AU-a907i 160 watts (JDM)
"Direct Coupled - Alpha X Balanced - Custom Capacitors - MOS FET - Compact Disc direct input"
1987 AU-a907i MOS Limited 80 watts (JDM)
"Direct Coupled - Alpha X Balanced - Ground Free"
1987 AU-X201 30 watts
1987 AU-X301 65 watts
1987 AU-X501 80 watts
1987 AU-X701 90 watts (int version of JDM AU-a607i)
1987 AU-X901 130 watts (int version of JDM AU-a707i)
"Direct Coupled - Alpha X Balanced - Ground Free - Diamond Differential"
1987 AU-X711 100 watts
"Based on the circuit technology and know-how up to that time...developed through uncompromising selection of parts, improvement and hearing test."
1988 AU-X1111MOS Vintage 110 watts (JDM) (and international)
"Direct Coupled - Alpha - Ground Free"
1988 AU-a307 65 watts (JDM)
1988 AU-a507 Extra ??? watts (JDM)
1988 AU-a607 Extra 90 watts (JDM)
1988 AU-a707 Extra 130 watts (JDM)
1988 AU-a907 Extra - (JDM) likely not mass produced or sold commercially
1989 AU-X111 30 watts
1989 AU-X911DG 100 watts
"L Extra" - first use of nonmagnetic transistors, all later versions had these
1989 AU-a607L Extra 90 watts (JDM)
1989 AU-a707L Extra 130 watts (JDM)
1989 AU-a907L Extra 160 watts (JDM)
1989 AU-a555VS 80 watts (JDM)
1989 AU-a777DG 90 watts (JDM)
1989 AU-a999DG 95 watts (JDM)
"DR and later" - upgraded circuitry and components
1991 AU-a607DR 90 watts (JDM)
1991 AU-a707DR 130 watts (JDM)
1990 AU-a907DR 160 watts (JDM
1991 AU-a 607 MOS Premium 45 watts (JDM)
1992 A-X750 40 watts
1992 AU-a507R 65 watts
"α -X balanced"
1992 AU-a607KX 90 watts (JDM)
1992 AU-a707KX 130 watts (JDM)
1992 AU-a907KX160 watts (JDM)
"Hyper α -X balanced"
1993 AU-a507XR Series 70 watts (JDM)
1993 AU-a607XR Series 90 watts (JDM)
1993 AU-a707XR Series 130 watts (JDM)
1993 AU-a907XR Series 160 watts (JDM)
1994 AU-a117K 30 watts (JDM)
1994 AU-a317K 55 watts (JDM)
1994 AU-a505XR 60 watts (JDM)
1994 AU-a907 Limited 80 watts (JDM)
1994 A-a7 50 watts (JDM)
1994 A-a9 50 watts (JDM)
"New Hyper α -X balanced"
1995 AU-a607MR 90 watts (JDM)
1995 AU-a707MR 130 watts (JDM)
1995 AU-a907MR 160 watts (JDM)
1995 AU-X517R 65 watts
1995 AU-X619R 65 watts
1996 AU-07 Anniversary 90 watts (JDM)
1996 A-E350 25 watts
1996 A-E550 55 watts
1996 A-E750 90 watts
1996 A-E770 50 watts
1996 A-E770 75 watts
1996? AU-a607MRX 90 watts
199x? AU-a707MRX 130 watts - unknown if ever in production. literature only confirmed.
1997? AU-a907MRX 160 watts
1997 A-a77 50 watts (JDM)
1997 A-a99 50 watts (JDM)
1997 AU-a205 30 watts (JDM)
1997 AU-a305R 55 watts (JDM)
1997 AU-a305RX 65 watts (JDM)
1997 AU-a505RX 80 watts (JDM)
"Ultimate α -X balanced"
1998 AU-a507NRA 60 watts (JDM)
1998 AU-a607NRA 80 watts (JDM)
1998 AU-a707NRA 130 watts (JDM)
1998 AU-a907NRA 160 watts (JDM)
1999 AU-405 60 watts (JDM)
1999 AU-a607 NRA ii 80 watts (JDM) (January 1999 - October 1999)
1999 AU-a607 MOS Limited 50 watts (JDM) (December 1999 - August 2000) --- THE LAST SOLID STATE SANSUI ---
SOURCES:
Amplifiers
SANSUI 製品一覧 サンスイ/山水
SANSUI
https://www.hifiengine.com/manual_library/sansui.shtml
Serial Number Report
INTERESTING THREADS:
-How to Best the Sansui X Balanced Amps
-Best breakdown on AK (probably) of the X generation right Here thanks @fojica
-X Balanced @Qsiris Here
-The 'alpha' name was applied to x-balanced models from 1986 onward and reflects an evolution of the original x-balanced circuitry. @pete_mac Here
-The AU-D11 II is a special version of the AU-D707X @JoseHH More here
ALPHA DESIGNATIONS:
L Extra - first use of nonmagnetic transistors, all later versions had these
DR and later - upgraded circuitry and components
XR and later - last circuitry upgrade (hyper speed forward)
Thanks @Qsiris Here
--------------------------------
ORIGINAL POST FROM OCTOBER 2022 -
Is there a complete chronological product list anywhere?
I've spent quite a bit of time on this sansui.us site, and looking around Google and can't find anything that looks complete .

History
- V. 06/27/23
- Organized chronologically, separate blocks of JDM and International, power low to high
- Dates based on actual production dates
- JDM = Japanese Domestic Market
- AAFES = Army & Air Force Exchange Service
- "Generations" currently defined by major form factor changes, and don't necessarily indicate a circuit evolution
- Please reply with suggestions, additions, corrections
--- SEPARATES ---
Pre Amplifiers
1968 TC-505 (pre amplifier w/tuner: pre-ceiver) (JDM)
1970 CA-606 (JDM)
Power Amplifiers
1968 BA-60 20 watts
1968 BA-90 28 watts
1971 BA-100 30 watts (JDM)
1970 BA-150 45 watts (JDM)
Pre Amplifiers
"Definition Series"
1975 CA-3000
"Professional Series"
1976 CA-2000
Power Amplifiers
"Definition Series"
1975 BA-3000 170 watts
1975 BA-5000 300 watts
"Professional Series"
1976 BA-2000 110 watts
1975 BA-1000 45 watts (VFET amplifier)
Pre Amplifier
1979 CA-F1
Power Amplifier
1979 BA-F1 110 Watts
--- INTEGRATED ---
--- FIRST GENERATION ---
1967 AU-777 25 watts
1968 AU-222 18 watts
1968 AU-555 20 watts
1969 AU-777D 30 watts (JDM version of AU-777A)
1969 AU-777A 30 watts
1970 AU-555A 25 watts
1970 AU-666 35 watts
1970 AU-888 45 watts
1970 AU-999 50 watts
1971 AU-101 15 watts
1972 AU-505 12 watts
1973 AU-2000 13 watts (JDM version AU-505)
--- SECOND GENERATION ---
1972 AU-6500 30 watts
1972 AU-7500 32 watts
1972 AU-9500 75 watts
1973 AU-8500 60 watts
1973 QA-7000 12 watts (QUAD)
1974 AU-22 13 watts (JDM)
1974 AU-33 20 watts (JDM)
1974 AU-2200 10 watts
1974 AU-4400 20 watts
1974 AU-5500 35 watts
1974 AU-6600 42 watts
1974 AU-7700 54 watts
1975 AU-7900 80 watts
1975 AU-3900 25 watts
1975 AU-4900 38 watts
1975 AU-5900 45 watts
1975 AU-6900 60 watts
1976 AU-2900 15 watts
1975 AU-1100 22 watts (JDM)
1975 AU-3300 35 watts (JDM)
1975 AU-1500 22 watts (JDM)
1975 AU-3500 35 watts (JDM)
"Professional Series"
1975 AU-9900 80 watts
1975 AU-11000 110 watts
1975 AU-20000 170 watts
1977 AU-9900A 80 watts
1977 AU-11000A 110 watts
1977 AU-10000 110 watts (JDM)
--- THIRD GENERATION ---
1977 AU-207 30 watts (JDM version of AU-217)
1977 AU-307 50 wats (JDM version of AU-317)
1977 AU-507 60 watts (JDM version of AU-417)
1976 AU-607 65 watts (JDM version of AU-517)
1976 AU-707 85 watts (JDM version of AU-717)
1977 AU-117 15 watts
1977 AU-217 30 watts
1977 AU-317 50 watts
1977 AU-417 65 watts
1977 AU-517 65 watts
1977 AU-717 85 watts
1977 AU-710 85 watts (AAFES version of AU-717)
1978 AU-D607 70 watts (JDM version of AU-519)
1978 AU-D707 90 watts (JDM version of AU-819)
1978 AU-D907 100 watts (JDM version of AU-919)
1978 AU-D907 Limited 100 watts (JDM)
1978 AU-919 100 watts
1979 AU-107ii 25 watts (JDM version of AU-117ii)
1979 AU-207ii 40 watts (JDM version of AU-217ii)
1979 AU-307ii 60 watts (JDM version of AU-317ii)
1979 AU-117ii 25 watts
1979 AU-217ii 40 watts
1979 AU-317ii 60 watts
1979 AU-417 65 watts
1979 AU-519 70 watts
1979 AU-719 90 watts
1979 AU-819 90 watts
--- FOURTH GENERATION ---
"Direct Coupled - Diamond Differential"
1978 AU-X1 160 watts (JDM) (and international)
"Direct Coupled - Diamond Differential - Super FeedForward"
1980 AU-D607F 75 watts (JDM)
1980 AU-D707F 95 watts (JDM)
1980 AU-D907F 130 watts (JDM)
"Direct Coupled"
1982 AU-D5 (B)(S) 65 watts
1982 AU-D7 (B)(S) 80 watts
"Direct Coupled - Diamond Differential - Super FeedForward"
1980 AU-D9 95 watts
1980 AU-D11 120 watts
"Direct Coupled"
1980 A-40 25 watts
1980 A-60 45 watts
1980 A-80 65 watts
"Direct Coupled - Diamond Differential - Super FeedForward"
"Extra" = copper plated chassis and non-magnetic elements
1981 AU-D607F Extra 80 watts (JDM)
1981 AU-D707F Extra 100 watts (JDM)
1981 AU-D907F Extra 130 watts (JDM)
"Direct Coupled - Diamond Differential - Super FeedForward"
1981 AU-X11 160 watts (JDM)
"Direct Coupled - Super FeedForward"
1981 AU-D55F 50 watt (JDM version of AU-D33)
"Direct Coupled"
1982 A-5 (B)(S) 25 watts
1982 A-7 (B)(S) 45 watts
1982 A-9 (B)(S) 65 watts
"Direct Coupled"
1982 A-500 (B)(S) 30 watts
1982 A-501 30 watts
1982 A-Classique501 30 watts
1982 A-505 30 watts
1982 A-510 (silver and black) 30 watts
1982 A-700 55 watts
1982 A-707 50 watts
1982 A-900 70 watts
1982 A-909 70 watts
1982 A-930P 70 watts
1982 A-1000 100 watts
1982 A-1001 100 watts
1982 A-1010 100 watts
1982 A-1100 100 watts
1982 A-1100P 100 watts
1982 A-1100R 100 watts
1982 A-1110 100 watts
1982 A-1130 100 watts
1982 A-1130P 100 watts
1982 A-1200 125 watts
1982 A-1200P 125 watts
1982 A-1200R 125 watts
1982 A-1230 125 watts
1982 A-1230P 125 watts
1982 A-1500R 160 watts
"Direct Coupled"
1983 AU-M7 25 watts
1983 AU-M70 25 watts
1983 AU-M77 25 watts
"Direct Coupled"
1983 A-M800 25 watts
1983 A-M9 70 watts
"Direct Coupled - Super FeedForward"
This group received notable press attention and a Wikipedia mention
1983 AU-D101 30 watts (UK/EUR 220/240V)
1983 AU-D22 35 watts
1983 AU-D33 50 watts
"Direct Coupled - Super FeedForward"
1983 AU-D55X 70 watts
"Direct Coupled - Super Ground Free?"
1983 AU-D77X 110 watts
--- FIFTH GENERATION --- BIRTH OF X-BALANCED
"Direct Coupled - Diamond Differential - Ground Free (The birth of X Balanced (in an integrated))"
1983 *AU-D11ii 130 watts -The AU-D11 II is a special version of the AU-D707X- MORE Here
"Direct Coupled - Diamond Differential - Super FeedForward - Ground Free"
"Extra" = copper plated chassis and non-magnetic elements
1983 AU-D607G Extra 90 watts (JDM)
1983 AU-D707G Extra 110 watts (JDM)
1983 AU-D907G Extra 130 watts JDM)
"Direct Coupled - Diamond Differential - Ground Free - X Balanced"
1984 AU-D607X 90 watts (JDM)
1984 AU-D707X 130 watts (JDM)
1984 AU-D907X 160 watts (JDM)
"Direct Coupled - Ground Free - X Balanced"
1984 AU-G11X 25 watts
1984 AU-G33X 45 watts
1984 AU-G55X 65 watts
1984 AU-G77X 110 watts
1984 AU-G99X 160 watts
"Direct Coupled - Ground Free - X Balanced"
1984 AU-G30X 45 watts
1984 AU-G50X 45 watts
1984 AU-G90X 130 watts
"Direct Coupled - Twin Diamond X Balanced"
1984 AU-D607X Decade 90 watts (JDM)
1984 AU-D707X Decade 130 watts (JDM)
1984 AU-D907X Decade 160 watts (JDM)
"Based on the circuit technology and know-how up to that time...developed through uncompromising selection of parts, improvement and hearing test." This amplifier would become the foundation for the final and last generation of Sansui amplifiers - The Alpha’s
1985 AU-X111MOS Vintage 110 watts (JDM)
"Direct Coupled"
1985 A-500 30 watts
"Direct Coupled"
1985 A-710 55 watts
1985 A-730 55 watts
1985 A-770 55 watts
"Direct Coupled"
1985 A-M90 70 watts
1985 A-M900 70 watts
1985 A-M99 70 watts
"Direct Coupled - Twin Diamond X Balanced - Compact Disc direct input"
1986 AU-D707XCD Decade 130 watts (JDM)
--- SIXTH GENERATION --- THE ALPHA GENERATION
"Direct Coupled - Alpha"
1986 AU-a307 65 watts (JDM)
1986 AU-a507 80 watts (JDM)
"Direct Coupled - Alpha X Balanced"
1986 AU-a607 90 watts (JDM)
1986 AU-a707 130 watts (JDM)
1986 AU-a907 180 watts (JDM)
"Direct Coupled - Alpha"
1987 AU-a307i 65 watts (JDM)
1987 AU-a507i 80 watts (JDM)
"Direct Coupled - Alpha - Custom Capacitors"
1987 AU-a607i 90 watts (JDM)
1987 AU-a707i 130 watts (JDM)
1987 AU-a907i 160 watts (JDM)
"Direct Coupled - Alpha X Balanced - Custom Capacitors - MOS FET - Compact Disc direct input"
1987 AU-a907i MOS Limited 80 watts (JDM)
"Direct Coupled - Alpha X Balanced - Ground Free"
1987 AU-X201 30 watts
1987 AU-X301 65 watts
1987 AU-X501 80 watts
1987 AU-X701 90 watts (int version of JDM AU-a607i)
1987 AU-X901 130 watts (int version of JDM AU-a707i)
"Direct Coupled - Alpha X Balanced - Ground Free - Diamond Differential"
1987 AU-X711 100 watts
"Based on the circuit technology and know-how up to that time...developed through uncompromising selection of parts, improvement and hearing test."
1988 AU-X1111MOS Vintage 110 watts (JDM) (and international)
"Direct Coupled - Alpha - Ground Free"
1988 AU-a307 65 watts (JDM)
1988 AU-a507 Extra ??? watts (JDM)
1988 AU-a607 Extra 90 watts (JDM)
1988 AU-a707 Extra 130 watts (JDM)
1988 AU-a907 Extra - (JDM) likely not mass produced or sold commercially
1989 AU-X111 30 watts
1989 AU-X911DG 100 watts
"L Extra" - first use of nonmagnetic transistors, all later versions had these
1989 AU-a607L Extra 90 watts (JDM)
1989 AU-a707L Extra 130 watts (JDM)
1989 AU-a907L Extra 160 watts (JDM)
1989 AU-a555VS 80 watts (JDM)
1989 AU-a777DG 90 watts (JDM)
1989 AU-a999DG 95 watts (JDM)
"DR and later" - upgraded circuitry and components
1991 AU-a607DR 90 watts (JDM)
1991 AU-a707DR 130 watts (JDM)
1990 AU-a907DR 160 watts (JDM
1991 AU-a 607 MOS Premium 45 watts (JDM)
1992 A-X750 40 watts
1992 AU-a507R 65 watts
"α -X balanced"
1992 AU-a607KX 90 watts (JDM)
1992 AU-a707KX 130 watts (JDM)
1992 AU-a907KX160 watts (JDM)
"Hyper α -X balanced"
1993 AU-a507XR Series 70 watts (JDM)
1993 AU-a607XR Series 90 watts (JDM)
1993 AU-a707XR Series 130 watts (JDM)
1993 AU-a907XR Series 160 watts (JDM)
1994 AU-a117K 30 watts (JDM)
1994 AU-a317K 55 watts (JDM)
1994 AU-a505XR 60 watts (JDM)
1994 AU-a907 Limited 80 watts (JDM)
1994 A-a7 50 watts (JDM)
1994 A-a9 50 watts (JDM)
"New Hyper α -X balanced"
1995 AU-a607MR 90 watts (JDM)
1995 AU-a707MR 130 watts (JDM)
1995 AU-a907MR 160 watts (JDM)
1995 AU-X517R 65 watts
1995 AU-X619R 65 watts
1996 AU-07 Anniversary 90 watts (JDM)
1996 A-E350 25 watts
1996 A-E550 55 watts
1996 A-E750 90 watts
1996 A-E770 50 watts
1996 A-E770 75 watts
1996? AU-a607MRX 90 watts
199x? AU-a707MRX 130 watts - unknown if ever in production. literature only confirmed.
1997? AU-a907MRX 160 watts
1997 A-a77 50 watts (JDM)
1997 A-a99 50 watts (JDM)
1997 AU-a205 30 watts (JDM)
1997 AU-a305R 55 watts (JDM)
1997 AU-a305RX 65 watts (JDM)
1997 AU-a505RX 80 watts (JDM)
"Ultimate α -X balanced"
1998 AU-a507NRA 60 watts (JDM)
1998 AU-a607NRA 80 watts (JDM)
1998 AU-a707NRA 130 watts (JDM)
1998 AU-a907NRA 160 watts (JDM)
1999 AU-405 60 watts (JDM)
1999 AU-a607 NRA ii 80 watts (JDM) (January 1999 - October 1999)
1999 AU-a607 MOS Limited 50 watts (JDM) (December 1999 - August 2000) --- THE LAST SOLID STATE SANSUI ---
SOURCES:
Amplifiers
SANSUI 製品一覧 サンスイ/山水
SANSUI
https://www.hifiengine.com/manual_library/sansui.shtml
Serial Number Report
INTERESTING THREADS:
-How to Best the Sansui X Balanced Amps
-Best breakdown on AK (probably) of the X generation right Here thanks @fojica
-X Balanced @Qsiris Here
-The 'alpha' name was applied to x-balanced models from 1986 onward and reflects an evolution of the original x-balanced circuitry. @pete_mac Here
-The AU-D11 II is a special version of the AU-D707X @JoseHH More here
ALPHA DESIGNATIONS:
L Extra - first use of nonmagnetic transistors, all later versions had these
DR and later - upgraded circuitry and components
XR and later - last circuitry upgrade (hyper speed forward)
Thanks @Qsiris Here
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ORIGINAL POST FROM OCTOBER 2022 -
Is there a complete chronological product list anywhere?
I've spent quite a bit of time on this sansui.us site, and looking around Google and can't find anything that looks complete .

History
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