Depends on the company. In two instances I've had my gear back from repair inside of a week. That was exceptional. Once I brought a preamp direct to the manufacturer over my lunch break. They corrected an issue while I waited.
Other repairs were between 1-2 weeks. I would think that is the norm unless the company is a one or two man shop.
Other repairs were between 1-2 weeks. I would think that is the norm unless the company is a one or two man shop.