Hi Darkmeobius,
The following is all I have been told about the unit:
"It has S$B transformers and 2 expensive Sieden rotary switches for source selection and volume control. It has +6 6db switch. I had bought it assembled.The user handbook/manual makes no mention of the transformer version of S&B transformers."
Hence, it is factory built. Secondly, the owner tell me that S&B no longer makes the transformers for the Django and that the new kits aviable have different transformers. I will inquire whether Brian whether its a good match for the Welborne DRDs. Once again, thank you so much for you advice.
Thanks