JRC datasheet, JRC pdf, JRC data sheet, datasheet, data sheet, pdf, New Japan Radio, = NJM / Dual Operational Amplifier. The JRC integrated circuit by Japan Radio Company is a dual high gain JRC Long Tailed Pair Differential Amplifier. . JRC Datasheet. Bookly Micro JRC datasheet, Dual Operational Amplifier (1-page), JRC datasheet, JRC pdf, JRC datasheet pdf, JRC pinouts.

Author: Nak Mirr
Country: Bangladesh
Language: English (Spanish)
Genre: Music
Published (Last): 28 February 2009
Pages: 463
PDF File Size: 17.43 Mb
ePub File Size: 16.9 Mb
ISBN: 961-9-22810-270-3
Downloads: 40006
Price: Free* [*Free Regsitration Required]
Uploader: Vosho

May 24, They had nothing in common. Ben HarmlessJun 4, If you’re doing this to a TS 10, short out the 1K resistor leading to pin 3 of the dual opamp as well. On the other hand, “better” and “vintage” aren’t necessarily the same thing, even though they get jumbled together in our sorry little heads.

May 23, 2. There were zillions of the real “JRC” made when it was current.

JRC4558 Dual Op Amp IC

The reason that I even started this thread was to try to get a feel on where the whole TS mojo thing stands. I then went on to check the specs of each ‘good’ chip. May 24, 5.

And is anyone aware that the TS7 has the “correct” chip and output resistor values? I know I read something recently about the that even when the TS datasheeet in original production, there was no single vendor. All of the ‘ variants sounded quite similar and ‘good’.


The in a Tube Screamer does have a sound that is good and is what a lot of people find to their liking. Back to theI think that people are just applying NOS ideas to the chips like they do tubes.

The Rat2 is the same way. If you want a JRC chip for a project, get a new chip from Steve at Small Bear Electronics who sells them cheap sorry we dont have time to sell chips or small parts. People are building clones and ditching their ‘real deals’ because they sound jjrc4558.

Some circuits sound better with inferior spec’ed chips. But I beleive the old JRC version is the holy grail of some even though the actual chip in some of the originals may be made by others.

Both have the JRC I wish I could say that it sounded noticably better but the TL that I put in the amp did! On the other hand, I also think we all at least I have personally tried some of the products on the idea dataseet “if I can afford it, what can it hurt? May 24, 8. May 24, 6. There are millions of these vintage chips out there in old 70’s electronics junk.

JRC myths | Telecaster Guitar Forum

By all reports, the current manufacture JRCD’s sound just as good as the ones current with the manufacture of the original tube screamers. I yanked it out and put it in my TS5. May 24, 7.


I tested about 25 different chips back in ’99, in a few 9’s, a few 5’s, and a clone. There is some confusion at present over what is a true or “vintage” JRC May 23, 4. There are probably 3 that most guitarists would agree sound ‘bad. I liked the 3 listed above enough to ‘splurge’ and order about 15 of each. Sorry to kick over any sacred cows but this is just my opinion based on my experience. I’m just wondering where things currently stand.

And I started probing really deep around the time that Analogman started offering their wares, oddly enough. There are over 40 different dual op dwtasheet chips available.

JRC4558 Datasheet PDF

These 3, in particular, sounded really, really good. Jun 3, And, of course, this is because they all meet the same specifications. Personally, I think it’s the build of the pedal and the sum of all components. Remove the compensation cap and put a TL in there with the rest of the circuit unmodded and it sounds awful.