Natalie, no I do not. I wish I had either the George Kaye or the Otto, but have not set aside the cash to do so.
I know that in spite of testing and listening tests that tubes can become noisy and microphonic hours or days after they have been given a clean bill of health.
I wind up relying on performance in the piece it is going in for the ultimate test. Lots of work to pull and replace until the perfect balance is achieved.
