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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What we could all really wish for is that large-scale pedal manufacturers would actually do LISTENING tests on these “identical” parts, rather than just buying whatever is cheapest at the moment.

Do you already have an account? Early TS’s have the Ibanez R “trademark” logo which some people seek.

May 23, 1. There is some confusion at present catasheet what is a true or “vintage” JRC If you want “vintage Tube Screamer” then this is the best choice probably. The clone had premium caps as well. It’s a little relieving to know that some of the opamp chip gurus were willing to let this out of the bag.

JRC4558 Dual Op Amp IC

And is anyone aware that the TS7 has the “correct” chip and output resistor values? They were consistently good. All of the ‘ xatasheet sounded quite similar and ‘good’.


In addition, the JRCD was used in tons of Japanese audio equipment at about the same time, so a junky cheap Japanese stereo or clock radio could have several hidden inside it. I didn’t overhear anything. Ben HarmlessJun 4, Personally, I think it’s the build of the pedal and the sum of all components. Definitely dataeheet than some of the garbage op amps that were used in the early TS9 reissues. Log in datasheett Sign up. 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 case of silicon.

I may even run some new tests with more chips, to see if I can find something better than my beloved TL What have y’all overheard at the musician’s watercooler discussions?

The reason that I even started this thread was to try to get a feel on where the whole TS mojo thing stands.

So I don’t buy the Holy Grail theory. May 24, 8.

If you’re doing this to a TS 10, short out the 1K resistor leading to pin 3 of the dual opamp as well. I yanked it out and put it in my TS5. There are other factors like the slew rate that may contribute as well, but to me the input impedance difference is the biggie. The Rat2 is the same way. May 24, 7. They are still available in jrc4585 caches of parts, although they can sometimes be hard to find.


If you want a JRC chip for a jdc4558, 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.

JRC Datasheet PDF – Dual Operational Amplifier

Are the misinformed still spending 30 bucks or more for a “NOS” chip, and 2 “brown sound” resistors? Jun 4, Does true “New Old Stock” matter? Back when my vintage Rat II died and I needed a replacement, I was kind of shocked just how inferior the current production Rats are – and the only substantial difference is the op amp. I’m just wondering where things currently stand.

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

I replaced the two output resistors with carbon film resistors I had laying around, and I just order a couple of new RCP’s for 25 cents a piece. I don’t think I went overboard with datashwet cost on this one. May 23, 2. There’s a tremendous difference between being able to detect a difference and being able to specify the cause datashfet the difference.

It’s a demonstrable fact that the tone quality of op amps varies significantly.