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.

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Are the misinformed still spending 30 bucks or more for a “NOS” chip, and 2 “brown sound” resistors? Does true “New Old Stock” matter? I didn’t overhear anything. But even all of these years later, the mystique around the ‘ still amazes me. Great points made, truly. Sorry to kick over any sacred cows but this is just my opinion based on my experience.

JRC4558 myths…

I tested about 25 different chips back in ’99, in a few 9’s, a few 5’s, and a clone. All dataeheet the socket installed, and were cooked 2 output resistor mod.

Back to theI think that people are just applying NOS ideas to the chips like they do tubes. On the other hand, I also think we all at least I have personally tried some of the products on the idea of “if I can afford it, what can it hurt? We have not lost technology over the years, like we have with tubes, we have taken the same technology and made it cleaner in the jrc4558 of silicon. May 24, 7.

May 24, 9. It’s a demonstrable fact that the tone quality of op amps varies significantly. I think the high end stereo guys, in particular, have been suseptable to this sort of pseudo-scientific clap-trap. Conversion to TS – this seems to be a perennial hot one.


The LM sounds great in there and it is a horrible opamp by todays standards.

May 24, By all reports, the current manufacture JRCD’s sound just as good as the ones current with the manufacture of the original tube screamers. And is anyone aware that the TS7 has the “correct” chip and output resistor values?

(Datasheet) JRC pdf – w w w .d e e h s a t a . Dual Operational Amplifier (1-page)

If you want “vintage Tube Screamer” then this is the best choice probably. I guess I’ll check back in 10 years from now and see how things have changed. Definitely better than some of the garbage op amps that were used in the early TS9 reissues. We have all gotten used to that noise, so it sounds better. However, I think the nature of how silicon works vs. All of the ‘ variants sounded quite similar and ‘good’.

I wish I could say that it sounded noticably better but the TL that I put in the amp did!

As far as ‘s in general I will say this. Several electronics suppliers list the JRC TL my fave The LT was also kinda cool sounding, but not consistently so in the handful of pedals that I tried it in. Ben HarmlessJun 4, datxsheet May datadheet, 8. One of the 9’s was beefed up with better i. I attribute the superior tone to the builder of the box. May 24, 6. It’s a little relieving to know that some of the opamp chip gurus were willing to let this out of the bag.


I started researching TS’s quite a long time ago. May 23, 2. May 24, 5. There are millions of these vintage chips out there in old 70’s electronics junk. The TL drives things harder jrc455 it is tighter and crisper. It’s amazing how some of these falsehoods prevail. I may even run some new tests with more chips, to see if I can find something better than my beloved TL The TL has a lot higher input impedance extremely higher actually.

Yes, my password is: Do you already have an account? Saying that the ‘ is the best dual opamp for a TS type pedal is like winning the lottery the very first time you play. That’s one o’ them boxes what makes yer amp sound datashet loud innit? And, of course, this is because they all meet the same specifications. If you hear rjc4558 difference then by all means go with what sounds best to you.

May 23, 1. Fatasheet clone had premium caps as well. Log in or Sign up. Remove the compensation cap and put a TL in there with the rest of the circuit unmodded mrc4558 it sounds awful.

These 3, in particular, sounded really, really good. There are other factors like the slew rate that may contribute as well, but to me the input impedance difference is the biggie.

What have y’all overheard at the musician’s watercooler discussions?