Anyone buys master tape dubs ?

You might want to upgrade later to Studer, I would think. Yes, extraordinarily expensive.

where does one purchase master tape dubs?

@inna, you have to be careful. the master tapes can be very addictive. Makes it really difficult go back and listen to your other sources.

If I am playing tapes, I have to end on playing tapes for the  night. then power everything down. Skip at least one day, then can come back to other sources.

But the tapes do chew through your wallet at a brisk pace.

johnss, you are right, you are right. I hear the same from people playing tapes on their Studers and Otaris.