PROCO RAT PEDAL SERIAL NUMBER SERIAL NUMBER
PROCO RAT PEDAL SERIAL NUMBER MOD

that chip - IMO it's not relevant to this thread), we could probably extend this to where it was built to not be of any significance, with the exception being the MIC units that clearly had sub-par pcb's and such. Seeing how it could somewhat be concluded that variations on components used is not of 'sonic significance' (I hope to not make this an issue of this chip vs. So even if everything was built in Kalamazoo, they weren't pulling components in some way that seems to make 'production sense' to 'us.' This may have been somewhat determined by the 'parent operations,' but that's just a guess.Д®ither way, it's clear that something like the OP07 chip was starting to be implemented before the LM308N supply was absolutely exhausted. I think that however ProCo had production set up that it wasn't 'linearized' like might be found with other mass produced things. And by same, I mean 'similar in all relevant ways'.Д¬lick to expand.I agree with you totally. same pots, same pcb, same switch, etc.), I'd argue that it's not incredibly relevant - the production method was probably pretty much the same in either location. If visual inspection of transitional year Rats doesn't clearly reveal any differences (e.g. The only clear marker seems to be the SN along with what chip was installed - under 300,000 and w/a LM308N and it was MIA, with the presumption being that it was prior to 2003, but no real guarantee of it. So the date itself isn't very useful, and there's basically at least 5 years of transition time where it could have been made in either location. The reason I think such is the case is because I've seen at least one 'history of' web page that highlights how a '07 Rat differs from an older one, I think with the assumption being that it was MIC. I think it would then stand that '08 is used as more of milestone or indicator that the transition was done, and all units were then MIC.

So you STILL have MIA Rats then, but now the chip is the OP07, and the transition is on.but it could be either country.

IOW, even the MIA Rats were transitioning from the LM308N to the OP07 probably prior to 2003, but it was around that time that I guess the conclusion could be made that all units had a SN over 300,000. So there's a bunch of transitional production Rats that I think the year was used just for the sake of simplicity. There was a transition period from MIA to MIC, as best as I can tell.ДЄpparently, the SN being under 300,000 actually is supposed to be an indicator that the pedal was made with the LM308N chip. Just thought it was worth mentioning as it goes against the general consensus.

This suggests to me that production of the RAT2 moved to China BEFORE 2008. I assume that this is the date it was modded by Keeley?

There is a signature on the inside of the casing with a date of June 2006.

PROCO RAT PEDAL SERIAL NUMBER SERIAL NUMBER

The serial number sticker does not state Made in USA and has a CE mark.

There are no date codes stamped on the pots.

It has the smaller knobs with the little cutaways.

It has the small Proco logo on the front.

It's a slanted enclosure with textured finish on the sides.

I've just purchased a used Keeley modded RAT and here is a description of it: I'm not convinced all of this info is correct.

PROCO RAT PEDAL SERIAL NUMBER MOD

Keeley Electronics also said at one time that they wouldn't mod RAT's after serial number 300,000 due to quality issues but they seem to be OK with this now. From my internet searching, the consensus is that the Rat2 changed to a slanted box enclosure in 2003 and production moved from USA to China in 2008.

Proco rat pedal serial number