Oh, sorry, it is output opamp in my Pioneer PD-S505 cd player. Originaly was have JRC4558. Schematic of interesting solution which I was attached is from PD-S605 model.
Hi milligor, hope the moderator is not gonna tell me of for a thread 'hijacking' attempt, but I suggest you try a good NE5532 instead of that New Japan Radio 'thing' you got in there... The NE5532 is pin compatible and still has some of best sonic caractaristics arround, despite being an 'ol hat', so it should be a definate improvement. Now don't be to dissapointed when you first try it out - it is very clean towards the top end in a good circuit, so subjectively in comparision with your previous chip, it might sound a bit 'dull'. Do not be put of by this, but give it a good long listen and you will probably find it 'groving on you'... The only better solution I can thick of before going esotericly discrete is the AD8599 in a 'brown dog' adaptor, but trying to get those parts together might prove tricky. And there is the LM4562, but I have not got any exsperience with that one. Good luck.
a1greatdane 😎
a1greatdane 😎
I have used the LM4562 in a number of applications including my sacd player and two dacs and it is definitely better sounding to my ear than the NE5532A, OPA2604, OPA2132/34, LM833, and OPA275.
The JRC4558 and 4559 are basically an improved version of the 741 in a dual - not something I would recommend in any design having high end aspirations, they aren't imo nearly as good sounding as the 5532 which is now almost 30yrs old..
Incidentally A does not stand for "Audio" - this suffix is used to connote some level of improved (and usually guaranteed) range of specifications.
The JRC4558 and 4559 are basically an improved version of the 741 in a dual - not something I would recommend in any design having high end aspirations, they aren't imo nearly as good sounding as the 5532 which is now almost 30yrs old..
Incidentally A does not stand for "Audio" - this suffix is used to connote some level of improved (and usually guaranteed) range of specifications.
I find NE5534 warm sounding but not as details as I like. The Op42 has the details but missing the 'human' touch. I like Opa627 as it give the female vocal the extra 'emotion' and still retain the details. Replacing Opamp is an easy way to tailor the sound to your liking.
BTW, anyone here tried the Burson Kills Discrete Op-amp? Not cheap but a drop in replacement without mod.
http://cgi.ebay.com.au/Opamp-Upgrad...oryZ3272QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
BTW, anyone here tried the Burson Kills Discrete Op-amp? Not cheap but a drop in replacement without mod.
http://cgi.ebay.com.au/Opamp-Upgrad...oryZ3272QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
AD746 for direct replacment or buy an adaptor or PCB for transfer dual opamp to mono opamp configurations. There are some choices at ebay.
kevinkr said:
Hi Kevin
In the case of the NE5532 A , the A stand for guaranteed low noise perfomance.
http://www.nxp.com/acrobat_download/datasheets/NE_SE5532_A_SA5532_3.pdf
Greetings.
Tube_Dude said:
Thanks, You just made my point.. 😉
Frankly other than instrumentation applications where the good low voltage noise performance might be a benefit there are a slew of op-amps out there with better AC performance, lower current noise and far better dc precision. I would choose any of those over the 5532/34. Any of the LM4562 family of devices will better it. It was great in its day, and marks a huge leap forward from the 741 based devices then extant, but it is a 30yr old design, and certainly does not represent the pinnacle of op-amp evolution..
Tube_Dude said:
Low noise performance OPs are for audio purpose, don't you think? One thing: NE5532A by Texas Instruments is the best.
miligor said:
And test instrumentation, medical electronics, telecommunications electronics, and ATE amongst other things. Audio is just one of many places where you might want a low noise op-amp. Personally I much prefer the LM4562 - sounds better and has significantly better electrical performance.
gasman said:
Hello gasman
What is your opinion on that CD Player regarding reability and lifespam, if you still got it?
I have in mind to buy one from Pacific Valve but reviews I´ve found are controversey.
http://www.pacificvalve.us/MHZSCD66.html
TIA for comments and best regards
JC
Hi, Had this player since Sep 2006 and it has been totally reliable with great sonics for the money, Cant find anything bad to say about it, Why pay more, you can even tube roll and swap op amps on it Cheers Gasman.
Re: Re: B/B 2604 upgrade.
Pacific Valves currently has the Shanling T-80 on sale for $649.00 I think that is worth a serious look as well.
JC Fardo said:
Pacific Valves currently has the Shanling T-80 on sale for $649.00 I think that is worth a serious look as well.
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