THIS IS NOT YOUR BASIC CLASSIC 808 Mod, It's much more, read on Tube Screamer fans!
Keeley Effects use the TI RC4558P like the old TS808 and they all come with a BLUE LED.
I have the TI RC4558P integrated circuit for your Ibanez Ts-9. This is what came in some early TS808 pedals. This will give your pedal TRUE TS808 sound. Many collectors agree that the TS808 with the TI4558P chip are some of the finest sounding pedals in the production. See photo of a TS808 circuit below. This is the same type pedal SRV used.
We START with the TS808 mods. They include the change of IC to a really nice sounding one, better than the JRC in my opinion and that of most regular users. We also change the output resistors, but don't use noisy carbon comp resistors. They don't add tone! They add noise and they are not within a close tolerance. It is an engineering/physics fact that these types of parts will add noise to your system. We use metal film resistors, only wire wound resistors (which won't fit in your pedal) would have a chance of being quieter!
PLUS, we increase the bass response so that it it is not cut off. A TS9 with full bass response, how sweet and full sounding! We increase the overdrive range. Players stated they wanted to have either more gain on the TS9 or the ability for it to clean up better when the drive was set at zero. We did that. You now have the best of both worlds! CLEANER when turned down and TWICE THE GAIN AND DRIVE when turned up with all of the stock TS808 sounds in the middle. Beautiful vocal sweet woman tone in the mid-section!
METAL FILM FOR HIGHER FIDELITY AND A MORE CONSISTENT SOUND FROM PEDAL TO PEDAL. As your guitar sound goes from one stage of your pedal to the next part (for example; Drive stage, to the Tone Control Stage, to the Buffer Stage), Ibanez used electrolytics to couple it. Well, there is a much less harsh sounding way of doing that. Use metal film caps! We also use metal film in the tone circuit for added fidelity. Is it a small difference, yes! Is it worth it? YES, every little section of your pedal is made up and these improvements don't just add up, they multiply!
New Improvements to the Bypass circuitry! Yes, we make it sound better even when it's off!
New Improvement to the Tone Control circuit! Took some hints from the Sparkle Drive and made our TS9 mods just a touch better!