Reply to Ecler SMAC PRO 40 knobs

Hello,

I own an Ecler SMAC PRO 40 mixer, it is becoming a little old but still functionning perferctly.

Now after more than 10 years of use, i want to replace all the mixer's knobs (like for EQ).

Does somebody knows which model should be compatible with this type of mixer ?

Is there a standard for knobs like this ?

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Thanks in advance for your help and sorry for my English, i usually speak french