JRC datasheet, JRC pdf, JRC data sheet, datasheet, data sheet, pdf, New Japan Radio, = NJM / Dual Operational Amplifier. the end of the datasheet. Noninverting Amplifier Schematic. 1. An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes. [CAUTION]. The specifications on this databook are only given for information, without any guarantee as regards either mistakes or omissions. The application.

Author: Vutaur Brajin
Country: Sweden
Language: English (Spanish)
Genre: Technology
Published (Last): 5 December 2008
Pages: 181
PDF File Size: 16.11 Mb
ePub File Size: 7.79 Mb
ISBN: 632-6-58910-584-7
Downloads: 63674
Price: Free* [*Free Regsitration Required]
Uploader: Samusar

There are over 40 dagasheet dual op amp chips available. 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.

They are still available in isolated caches of parts, although they can sometimes be hard to find. This is where the rec. Great points made, truly. May 24, 8. Log in or Sign up. May 24, 9. It’s a little relieving to know that some of the opamp chip gurus were willing to let this out of the bag.

I then went on to check the specs of each ‘good’ chip. All of the ‘ variants sounded quite similar and ‘good’. Does true “New Old Stock” matter?

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. Several electronics suppliers list the JRC The TL drives things harder and it is tighter and crisper.


When you order these, you get parts that are labeled “JRC”.

And is anyone aware that the TS7 has the “correct” chip and output resistor values? 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.

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

Put a TL in there and be prepared for an overly bright dqtasheet brittle sound. Yes, my password is: I attribute the superior tone to the builder of the box. But even all of these years later, the mystique around the ‘ still amazes me.

JRC Datasheet pdf – = NJM / Dual Operational Amplifier – New Japan Radio

Jun 3, I know I read something recently about the that even when the TS was in original production, there was no single vendor. Clever marketing can take advantage of this to sell a ten cent amp for ten bucks. All had the socket installed, and were cooked 2 output resistor mod.

May 23, 2.

May 23, 1. On the other hand, “better” and “vintage” aren’t necessarily the same thing, even though they get jumbled together in our sorry little heads. Are the misinformed still spending 30 bucks or more for a “NOS” chip, and 2 “brown sound” resistors?


JRC4558 myths…

However, the odds that they’ll hear a difference jcr4558 very good, and if there’s an audible difference, multiple listeners will have consistent preferences. So I don’t buy the Holy Grail theory. My unscientific conclusion was that the rjc4558 chip probably has yet to be found.

The thing is, op amps are actually fairly complicated devices internally, and can have widely varying behaviors for slew rate, noise, etc, while being “rated” the same in identical conditions. There were zillions of the real “JRC” made when it was current. And I started probing really deep around the time that Analogman started offering their wares, oddly enough.

We have all gotten used to that noise, so it sounds better. May 24, 6. Ben HarmlessJun 4, However, I think the nature of how silicon works vs. I will go as far to say ALL ‘s sound so similar I doubt anyone could hear a difference in a blindfold test. The TL eatasheet a lot higher input jrx4558 extremely higher actually. If you want “vintage Tube Screamer” then this is the best choice probably.

Remove the compensation cap and put a TL in there with the rest of the circuit unmodded and it sounds awful. They had nothing in common.

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

Author: admin