The first one is fugazi I guess !
Correct. The surface is rough from the original part number being removed, the leads are scratched from mishandling, the logo is wrong and the LDC does not follow the TI LDC format. The power supply current was low. It was probably a TL0x2.
So do I need to sort my OPA2134 to get the best ?
Absolutely not. If they don't all sound the same, then one or more of them is bogus. Is your board socketed? How many spare OPA2134s do you have? You could try subbing other OPA2134s. If all of them sound the same, then it's your board. Or try alternate opamps and see if you find something you like better.
Did you measure the resistance & taper of your TONE pot? The tolerance on them is pretty loose, so that might be the culprit. Easy to measure in-circuit because C8 blocks DC. Should be within ±20% of 10K when TONE is dimed. Should be 15% of that reading at noon.
One more thing...
Most of the signals return to Vref, not ground. That puts C101 in the audio signal path. Depending on C101's ESR, capacitance & dielectric absorption, you could get tonal differences.
/rant mode on/
It vexes me why someone would design an audiophile-grade opamp into a dirt pedal.
I do not agree with the design philosophy of returning signals to Vref when they could be returned to ground. Ground will always be cleaner than Vref. Everything that connects to Vref has a cap in series except R3, so it's not a matter blocking DC. It would be simple enough to put a cap in series with R3 and return it to ground.
I imagine Greer had their reasons for doing it this way. It's not clear to me what they were.
/rant mode off/