[Joeztech]

Today I received the Heyboer Dynaco 470, NTS-8093 transformer. Boy am I irritated! This is not at all what I expected. I expected a duplicate for the Dynaco A470 complete with primary center tap, two screen grid leads and two plate leads - a true ultra-linear transformer. Instead what I see is a unit that has only a primary with center tap and two plate leads - a Williamson type transformer. I have sent them an e-mail explaining that I cannot use this as it is not an ultra-linear transformer. Yes, I could install it and get it to work, but it would never be what Dynaco intended for the design and I will not compromise on that. This will have to go back and I hope they will be willing to give me credit back on my account. The other aspect is that I could have already had an off-the-shelf Triode Electronics transformer that would have been correct. This is costing me not only money (shipping to return) but time as well.

So the moral to my story is do not order a replacement output transformer from Heyboer thinking you are getting a transformer that duplicates the Dynaco design. It will not be the same design as the original.

Joe