With all this fever surrounding the TDA1541 chips and the special S1 and S2 selected versions, you'd think Philips would cottoned onto it by now and start re-manufacturing these chips.....
Maybe we should start a petition haha
Maybe we should start a petition haha
On that pic the S2 was not printed at the same time as the TDA1541A, Andy's statement remains true.
They won't use different font set just for the S & 2, just a second machine to print 😉
On the S and 2 on the main print it's obvious, the S2 is more fat. (and for me slanting a bit).
They won't use different font set just for the S & 2, just a second machine to print 😉
On the S and 2 on the main print it's obvious, the S2 is more fat. (and for me slanting a bit).
Hi,
I just got a TDA1541A from Honk Kong with light brown print (after reclaiming when I got 2x TDA1541 instead of 1541A)
With production code: HSH0405 1 Y. Font is right.
Would indicate 2004 week 5??????
I just got a TDA1541A from Honk Kong with light brown print (after reclaiming when I got 2x TDA1541 instead of 1541A)
With production code: HSH0405 1 Y. Font is right.
Would indicate 2004 week 5??????
Yes. How do you think that are so many TDA1451 on the market? From Philips leftovers?
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Well, if you want to bring fake 1541A on the market I think it is not very smart to put a production date on it that is immediately questioned. Isn't it?
More remarked fakes?
I'd be guessing but looks like some regular TDA remarked. Look at how the crown and S1 are all over the place and vary in brightness.
Here's the fleabay auction.
Dual 16-bit DAC IC TDA1541A S1(Crown) TDA1541AS1 - eBay (item 320389202973 end time Apr-21-10 07:48:26 PDT)
Regards,
Dan
An externally hosted image should be here but it was not working when we last tested it.
I'd be guessing but looks like some regular TDA remarked. Look at how the crown and S1 are all over the place and vary in brightness.
Here's the fleabay auction.
Dual 16-bit DAC IC TDA1541A S1(Crown) TDA1541AS1 - eBay (item 320389202973 end time Apr-21-10 07:48:26 PDT)
Regards,
Dan
Dan,
The markings on genuine S1's are all over the place as they were hand-selected and stamped.
Andy
The markings on genuine S1's are all over the place as they were hand-selected and stamped.
Andy
I have a couple of pcs that looks just like that. I thought
that they were fake too. I sent 2 pcs to Lesha & he infact
reported that they sound much better than the A's that
he was using
that they were fake too. I sent 2 pcs to Lesha & he infact
reported that they sound much better than the A's that
he was using
more pictures !!!
In my opinion there is a Chinese manufacture that copy many many parts, you can see the legs of those chips are not shinny and all oxidate, cheaper very low quality metal.
In my opinion there is a Chinese manufacture that copy many many parts, you can see the legs of those chips are not shinny and all oxidate, cheaper very low quality metal.
An externally hosted image should be here but it was not working when we last tested it.
I am posting for comparation, pictures of two original cips (Philips CD473) - SAA7220P/A and TDA1541 (non-A but it might help with the datecodes).
Looks like at some point, Philips stoped stamping the company sigla on the cips (cost saving?).
Looks like at some point, Philips stoped stamping the company sigla on the cips (cost saving?).
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I agree that they are both chinese fakes... but what are they ? Are they worth something , especially in audio standards ?
Who knows, could be anything. Could be old TDA1541 (non-A) restamped. All the fakes I've tested overload the power supply.
Good to know.. Ill build the analogmetric dac and see... ill try to post something .. many innocent diy<er said the dac sounded really good. I have many real tda to benchmark against.
So far the thing I hate about is I bought canned opamps from china that were unusable , lost 98 $... now these parts costed me a lot from analogmetric... the legs of the IC<s are soft brushed metal, not shinny like quality ic<s
So far the thing I hate about is I bought canned opamps from china that were unusable , lost 98 $... now these parts costed me a lot from analogmetric... the legs of the IC<s are soft brushed metal, not shinny like quality ic<s
I've had a few bits and kits over from AnalogueMetrics - no problems - no 1541A chips tho. - i think there's a whole lot of these in Indonesia just sitting around in boxes.