Texas Instruments P Operational Amplifiers – Op Amps are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas. P Semiconductors are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for P Semiconductors. Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current.

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Korea Electronics (KEC)

Early TS’s have the Ibanez R “trademark” logo which some people seek. So I don’t buy the Holy Grail theory. I have another clone of the same circuit that I paid significantly less for and it shows.

May 24, 7.

May 24, 5. 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? 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. I liked the 3 listed above enough to ‘splurge’ and order about 15 of each.


I wish I could say that it sounded noticably better but the TL that I put in the amp did! I sent Analogman my TS-9 several years ago and had him replace the chip and beef up some weak spots with no other mods and it came back as he described: You must log in or sign up to reply here.

They had nothing in common. Great points made, truly. Ben HarmlessJun 4, I think the high end stereo guys, in particular, have been suseptable to this sort of pseudo-scientific clap-trap. Both have the JRC I started researching TS’s quite a long time ago.

There is some confusion at present over what is a true or “vintage” JRC And, of course, this is because they all meet the same specifications. I don’t think I went overboard with the cost on this one.

P Datasheet PDF – KEC

However, I think the nature of how silicon works vs. I’m just wondering where things currently stand. That’s one o’ them boxes what makes yer amp sound real loud innit?

Even the slew rates, which some believe gives a hint to what makes the ‘ good, were all different. May 23, 1. The differences between the TL and the are subtle, but there none datashheet less.


4558P Datasheet

Are the misinformed still spending 30 bucks or more for a “NOS” chip, and 2 “brown sound” resistors? What have y’all overheard at the musician’s watercooler discussions?

There are probably 3 that most guitarists would agree sound ‘bad. 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.

The reason a carbon comp resistor sounds “better” than a film resistor is the additional noise it adds to the circuit. Oh, and I should add that it’s unlikely listeners will “get the chips right” in say, blind testing between vintage JRC and new Fairchild.

The clone had premium caps as well. May 23, 2. We have all gotten used to that noise, so it sounds better.