WTB Dynaco A-430 output transformer

[Francois G]

I have one (NOS) and I am looking for another single Dynaco A-430 Super-Fidelity output transformer in nice shape (and fully functional) to make a pair. Please PM me if you have one sitting in the closet. This is what it looks like:

 

[Bandersnatch]

I have only pairs of A431's that are end-bell style.
cheers,
Douglas

 

[rayma]

If you want a matched pair, I'd sell that one on ebay and buy a new pair from dynakitparts.
That one is really early and rare.

 

[Bandersnatch]

If you want a matched pair, I'd sell that one on ebay and buy a new pair from dynakitparts.
That one is really early and rare.

One of the reasons I'll suggest this as well is based on a pair of Mk.iii's I had. Acquired them at a yard sale in their boxes. Nicely built but not much in the way of evidence they ever got used. One was unstable. The fix I applied to both after eventually swapping out its OPT on the bench was to reduce the level of NFB applied through the global loop. I don't know how variable these are...but there is certainly some.
cheers,
Douglas

 

[Francois G]

Thanks for the input, all. I appreciate it.

If you want a matched pair, I'd sell that one on ebay and buy a new pair from dynakitparts.
That one is really early and rare.

I had hope that there was someone else that wanted to sell a singel Dynaco A-430 (possibly after trying unsuccessfully for a long time to find a mate ). The specimen I have is very nice NOS.

My pair of MkIIIs has the original A-431 output transformers, but I would like to build a second pair of monoblocks with the “Dynaco Super-Fidelity” potted OT - to see if I can hear any difference.

Had anyone done that - compared the “regular” Dynaco outputs with the comparable “Super-fidelity” models?

 

[Francois G]

Time to try again.

 

[Francois G]

Try again.

 

[4R5]

Here's a picture of one for sale at a recent Swap meet:

This was a Ham swapmeet that was mentioned in ARF (Antique Radio Forum), here is the link: https://antiqueradios.com/forums/viewtopic.php?f=24&t=419302
You could join the group and contact the member posting this link to see if he could help you locate the seller.

 

[4R5]

I'm a member of the ARF so I contacted the poster to see if he can find the contact info of the seller.

 

[Francois G]

Thanks for the help offer. No word about the seller?

 

[4R5]

I contacted the forum member who forwarded my request to the WARCI president, the guy that took the pictures. He got back to me saying he knew the seller and a subsequent email he said the amp was sold. Sorry.

 

[Erinwomack]

I see this post was quite some time ago but if you're still looking, i have this amp and would be willing to part out for the right price. I don't have much knowledge and after lots of forums and research i believe it was an old DIY. I brought it to a guy who tested everything and while there was a couple minor glitches everything did work.