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2017 Sansui Serial Number Database

My January 2025 Report

210,013063297,ebay.com
221,027060360,canuckaudiomart.com
331,016121493,canuckaudiomart.com
350A,022081158,ebay.com
4000,029111688,ebay.com
771,236040073,canuckaudiomart.com
881,236070547,kijiji.ca
A-alpha 77,609075264,yahoo.aleado.com
AU-101,224083100,ebay.com
AU-11000,236080006,canuckaudiomart.com
AU-11000,236090483,ebay.com
AU-111,518091222,gerhardwartha.com
AU-1500,836052332,ebay.com
AU-22,834050440,ebay.com
AU-3900,836094275,youtube.com
AU-517,227081414,kijiji.ca
AU-555A,820060744,youtube.com
AU-5900,217040558,canuckaudiomart.com
AU-6600,814110424,ebay.com
AU-666,021070181,canuckaudiomart.com
AU-666,021111496,ebay.com
AU-717,228044369,canuckaudiomart.com
AU-719,229052621,ebay.com
AU-7700,836030647,ebay.com
AU-999,221120066,olx.pl, last digit could be an 8
AU-alpha507XR,607020851,ebay.com
AU-D11,220110226,canuckaudiomart.com
AU-D607F Extra,822100740,ebay.com
AU-G66X,647035652,ebay.com
AU-X901,438083292,canuckaudiomart.com
B-3000,509011363,ebay.com
C-77,860101202,kijiji.ca
D-95M,250121345,kijiji.ca
FR-Q5,340090247,kijiji.ca
G-8000,858010407,canuckaudiomart.com
HF-L60,17855,canuckaudiomart.com
HF-L60,45002,canuckaudiomart.com
P-50,610010192,kijiji.ca
QRX-3500,223050169,ebay.com
SE-7,910031774,canuckaudiomart.com
SE-8X,645102280,canuckaudiomart.com
SR-525,326050543,kijiji.ca
SR-525,326074143,canuckaudiomart.com
T-77,860101077,kijiji.ca
TR-707A,87071546,ebay.com
TU-217,848062812,ebay.com
TU-217,849020519,ebay.com
TU-5900,026100206,kijiji.ca
TU-777,239100262,ebay.com
TU-9500,223120227,ebay.com
TU-999,222030019,olx.pl
TU-999,230090275,ebay.com
TU-S7,832120167,ebay.com

* Why is TU-S7,833020097 an Invalid Date Code? (page 966 in database)

[HF-L60 is a Mono Valve Power Amplifier Introduced March 1956]

=========================================

This time last year I went into 2024 determined to find 1,000 new entries into the database for the year. After several slack months in mid summer, I only filed 870 for the whole year. It is frustrating as so many ads have either no pictures of the backs of the equipment, or the serial number is not legible. Or we already have the number in our base. I am focusing this year on trying to sort out some issues. I will continue to add on a regular basis but the lists will be shorter.

Points from earlier in the month:

LBPete said:
42,178 is the total in the database. Any discrepancy is either the algorithm that generates the report is missing some serial numbers or data is getting lost the conversion of the PDF file into a more workable format like excel.
Click to expand...

Of the two suggestions of the total count discrepancies, only the first is possible since I do not import the monthly pdf report into any database software.
I read it directly in a pdf reader. The only tool I have at my disposal is the search count. I.e. Search [, 1965] gives me 78 hits. Search [, 1977] gives me 3,388 hits.

As for the D series cassette decade errors, I suspected many were off. While this would give a shift to the annual production date chart, I'd like to make progress with the decade errors, and would prefer to update the chart semi annually at best.

As for the pre-1965 equipment, I agree we have so few examples from this period, we do not have the justification to insist on having decoded the old system.
 
My kw04 harvest:

1000X,012110861,kleinanzeigen
6060,816081153,kleinanzeigen
771,226060428,kleinanzeigen
A-80,870031244,kleinanzeigen
AU-alpha 607MRX,606050046,kleinanzeigen
AU-719,229070767,kleinanzeigen
AU-505,814081688,kleinanzeigen
AU-9500,213030268,kleinanzeigen
D-90,249080955,kleinanzeigen
D-X111HX,600045548,kleinanzeigen
D-X419HX,503100253,kleinanzeigen´
QRX-5500,233111885,kleinanzeigen
R-50,591011904,kleinanzeigen
SP-4500A,615472,kleinanzeigen
SP-Z77,945070941,kleinanzeigen
SP-Z77,945061471,kleinanzeigen
SR-222,315121692,kleinanzeigen
SR-222,316045636,kleinanzeigen
T-80,849090507,kleinanzeigen
T-80,840040521,kleinanzeigen
TU-9900,848100152,kleinanzeigen
TU-9900,848080154,kleinanzeigen
TU-X701,627129213,kleinanzeigen
 
Latest shopgoodwill Sansui harvest:
QS-500,831104330,goodwill,might already be in db
D-65CR,625065114,goodwill,cassette player
T-700,616060866,goodwill
QS-100,831110786,goodwill,probably already in db
331,015113189,goodwill
5000X,811091218,goodwill
AU-a505RX,607127025,goodwill,JDM
QRX-3000,823090390,goodwill
SC-3000,595121318,goodwill

Second time I've seen an alpha series integrated amp at Goodwill's site. Wow.
Some pictures of the AU-a505RX in question. It's definitely a looker:
1738014243930.jpeg
1738014261396.jpeg
 
Last edited:
bubhardy said:
Hi, Pete!

AU-9500,214030602,bubhardy
Click to expand...

Ben Bassett said:
SDM-2,753Z1,Ben Bassett
Click to expand...
Thanks guys, got 'um!

@Monicker1, I don't know why that TU-S7 didn't have a date. I've made the correction. The reference for the HF-L60 is very helpful. The most time consuming part of processing the month's data is finding credible reference for models that are not already in the database. I don't put them in unless I actually see one. That can take some time for rare models like this one.

@RZ1, don't get too excited about this AU-alpha 505RX, Sansui tacked the alpha name on a lot of mediocre gear in their last few years. Did you notice this on is a Japanese Domestic Model (JDM)? You can tell by the input voltage, 100V only. When you post a serial number for these 100V units, add the note JDM.

Also, anyone thinking about buying a JDM model from a US/Canadian source, you want to verify that it works properly. There is a good chance that these 100v models have been operated on 120V. That won't kill it right away but will hurt it over time.

@peterott, I have yours too. Thanks!

- Pete
 
LBPete said:
When you post a serial number for these 100V units, add the note JDM.

Also, anyone thinking about buying a JDM model from a US/Canadian source, you want to verify that it works properly. There is a good chance that these 100v models have been operated on 120V. That won't kill it right away but will hurt it over time.
Click to expand...
That's good to know. I have tacked the JDM tag on that serial as per your suggestion and will make sure to add that tag to any future JDM models I pull serials from. Also I know Sansui was financially on the ropes during the time they made the alpha series- I just thought it was interesting that one showed up at a Goodwill. It's not something that happens often.
 
@LBPete , I have to give you a bit of headache for the next report. It seems an unintentional duplicate of a 20 years distance between 2 items.
If you compare AU-101 numbers (1973) vs RZ-3900 numbers (1993), the range is pretty much overlapping.

Examples AU-101 from the PDF:
513100997 October, 1973
513100753 October, 1973
513100541 October, 1973
513100166 October, 1973

Examples RZ-3900 from the PDF - only 3 in total in the database:
513100624 October, 1993
513100398 October, 1993
513100211 October, 1993

Now I harvested one new number off kleinanzeigen from an offer today of a RZ-3900 and it matches one of the already entered AU-101:
RZ-3900,513100541,kleinanzeigen

RZ-3900.JPG
 
My harvest for WK5, hopefully JIT to make this month installment of the database:
221,017010060,catawiki.com
300L,249090168,catawiki.com
AU-317,218090987,catawiki.com
AU-777,119040205,catawiki.com
SC-1110,248111737,catawiki.com
AU-222,119100065,marktplaats.nl
AU-3900,815100019,marktplaats.nl
AU-5900,836050644,marktplaats.nl
AU-X111,311033797,marktplaats.nl
AU-X501,621077765,marktplaats.nl
AU-X501,619128951,marktplaats.nl
B-1000,531040161,marktplaats.nl
C-1000,530110356,marktplaats.nl
CD-X501i,337122448,marktplaats.nl
D-X301i,328060172,marktplaats.nl
T-1000L,511011317,marktplaats.nl
T-700L,626040292,marktplaats.nl
T-700L,646025147,marktplaats.nl
TU-505,813110774,marktplaats.nl
TU-S33,871101665,marktplaats.nl
TU-X111,601081361,marktplaats.nl
T-80,849121038,PE9ZZ

I now have two of those hybrid T-80 tuners. The second one needs readjustment and better dial lighting. I guess one measly LED has been put in but you need more oomph than that. Unusual high number of duplicates from the Wacky, 6/11.
 
peterott said:
@LBPete , I have to give you a bit of headache for the next report. It seems an unintentional duplicate of a 20 years distance between 2 items.
If you compare AU-101 numbers (1973) vs RZ-3900 numbers (1993), the range is pretty much overlapping.

Examples AU-101 from the PDF:
513100997 October, 1973
513100753 October, 1973
513100541 October, 1973
513100166 October, 1973

Examples RZ-3900 from the PDF - only 3 in total in the database:
513100624 October, 1993
513100398 October, 1993
513100211 October, 1993

Now I harvested one new number off kleinanzeigen from an offer today of a RZ-3900 and it matches one of the already entered AU-101:
RZ-3900,513100541,kleinanzeigen

View attachment 3414065
Click to expand...

No headache, due to the single digit that designates the year, serial numbers can recycle every ten years. This overlap is more likely to be a coincidence than an error. The only time they would be rejected in the upload process is if the new serial number duplicates a serial number existing in the database. If it's a genuine "decade duplicate," I save it in separate table than the main table and link it in before running the monthly report.

These are very different units, how did you find this overlap?

CoolHands said:
AU-9900,236060447,coolhands

In uk.
Click to expand...

Thank you Sir! Your AU-9900 was built on production line 23 in June of 1976. It was the 447th unit off that line that month. Line 23 was also building the QRX-5500A, 771 and 881 that month.

@PE9ZZ, I have a T-80 deteriorating on a shelf in the garage. It needs some attention too.

@Monicker1, I have yours too. Thanks!

I'm going to start processing the January serial numbers now. Anything after this will be in the February report.

Thanks to all that contributed.

- Pete
 
LBPete said:
No headache, due to the single digit that designates the year, serial numbers can recycle every ten years. This overlap is more likely to be a coincidence than an error. The only time they would be rejected in the upload process is if the new serial number duplicates a serial number existing in the database. If it's a genuine "decade duplicate," I save it in separate table than the main table and link it in before running the monthly report.

These are very different units, how did you find this overlap?
Click to expand...

Each number I harvest I usually cross-check against the PDF in a quick search in order to see if the is already in for that unit.
First time I see such a number re-appearing on a different item. Thought that this was avoided at best by Sansui but seems not - as it was my first encounter of such a number.

But as you pointed out, this seems more easily possible with the single 10-years digit. Will see when I have the next one in front of me :)
 
kw05 harvest:

881,815110655,kleinanzeigen
AU-G90X,435110871,kleinanzeigen
AU-X501,619128971,kleinanzeigen
AU-X501,610072362,kleinanzeigen
B-77,581010891,kleinanzeigen
C-77,860092420,kleinanzeigen
C-2101,606067147,kleinanzeigen
CD-X311II,205232000599,kleinanzeigen
CD-X317,15201001233,kleinanzeigen
CD-alpha 907i,317110005,JimEGR's picture in https://audiokarma.org/forums/index...ayers-cd-α907-and-cd-α907i-907.1031245/page-2
CD-V1000,347041284,kleinanzeigen
D-290,436086526,kleinanzeigen
D-X117HX,2236002414,kleinanzeigen
P-2000,0804161955,kleinanzeigen
P-L35,425083688,kleinanzeigen
P-L45,316070256,kleinanzeigen
R-5,841096901,kleinanzeigen
RZ-1500,12003003273,kleinanzeigen
SC-2110,587070397,kleinanzeigen
SP-X8000,97111000,kleinanzeigen
SP-1200,93080575,kleinanzeigen
SP-3500,91041528,kleinanzeigen
SP-5000A,95070048,kleinanzeigen
SP-5500X,96103575,kleinanzeigen
SP-Z7II,944073242,kleinanzeigen
TU-217,818030891,kleinanzeigen
TU-717,847071060,kleinanzeigen
TU-X701,627129192,kleinanzeigen
 
Another harvest from the Goodwill website:
2000A,810081338,shopgoodwill
T-1110,634071400,shopgoodwill
A-1110,414062323,shopgoodwill
R-99Z,851070872,shopgoodwill
D-X111HX,600060042,shopgoodwill
D-99CW,664067809,shopgoodwill
3000A,228055734,shopgoodwill
CDD-3000,620106951,shopgoodwill,cd changer and cassette deck
S-X1050,624043158,shopgoodwill
AX-7,918071535,shopgoodwill,audio mixer
S-61U,359495,shopgoodwill,speaker serial unusual format
5050,857100104,shopgoodwill

Photo of the T-1110 and A-1110
1738786394246.png


Edit 5 Feb 2025 10:02 PM: Added more serials
 
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