I am a retailer for the new Well Tempered Lab products and thought that I might respond to your concerns about Opera.
Opera is only the contractor who is supplying the parts and labor for the Amadeus turntables. This is Bill Firebaugh's design, and his partner in New Zeland oversees the production of the parts and the finished product, independently of Opera's own quality assurance people.
This product line is completely supported by Well Tempered Lab, not Opera, and is supported in the States by TOFFCO, who is also the Dynavector distributor.
Well Tempered Lab also has a strong working relationship with Dynavector worldwide.
I don't expect there to be any quality or service issues with this product. All of the expendable and wearing parts are easily sourced from many places, and the unique parts are exceedingly long-wearing.
There is already a good inventory of wearing parts laid in with TOFFCO. Belts, for instance, are replaced free of charge for as long as you own the turntable. Just write or call and they are mailed to you.
In summary, no service issues that may occur with the Amadeus or any Well Tempered product will require any type of communication with Opera. All issues will be handled directly by Well Tempered Lab, and in the USA by TOFFCO.
Osage Audio Products, LLC