I can use this chip in the mod if you would like, or can send both the JRC4558D and the RC4558P chips.Most TS7 pedals come with the correct JRC4558D chip, so we usually dont have to change the chip in our TS7 mods.įrom Geofexs website.JRC later changed its name to New Japan Radio Corporation and made parts titled NJM4558. 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.įrom Analogmans website.Also people have asked about chips on ebay that are being sold as New Old Stock TS-808 JRC4558D chips.ġ11111111111111111111111111111If 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).Early TS-808s have the Ibanez (R) trademark logo which some people seek.

Pro tools edirol ua 25 driverīack to the 4558, I think that people are just applying NOS ideas to the chips like they do tubes. The reason a carbon comp resistor sounds better than a film resistor is the additional noise it adds to the circuit. 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 I would love to have an amplifier with oil-paper caps just to see, even though I know that years ago NASA did studies and found that there was no difference in capacitor performance due to construction if they had the same parasitic losses. I think the high end stereo guys, in particular, have been suseptable to this sort of pseudo-scientific clap-trap. I put this in the same piles as some of the capacitor, resistor and conductor stuff floating around. I know I read something recently about the 4558 that even when the TS was in original production, there was no single vendor.īut 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). 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: better. What have yall overheard at the musicians watercooler discussions. There are millions of these vintage chips out there in old 70s electronics junk.Īnd is anyone aware that the TS7 has the correct chip and output resistor values Its amazing how some of these falsehoods prevail.

Persamaan ic 4558d jrc