Vintage Asylum

"Genuine D. T. N. Williamson Amplifier", what do I have here?

107.199.230.130

rheingold

A

Hi, I come here in hopes to find some info on an amplifier that I picked up at an estate sale. I can find almost no info about this on the net, and not one picture that matches it.

The only mention at all is an auction from 2015 where apparently an amp that matches mine (same badge per description, pictures are gone) sold, minus the power supply unit.

This one is complete down to the umbilical cord that connects the power supply to the power amp. Somebody added a US power cord to bypass the English pignose plug.

I would love to learn a bit more about what I found here. Anybody know?

Thanks!

Follow Ups:

More photos please - trobbins 15:37:57 02/17/17 (0)
I'd certainly appreciate any underside photos.

And if you get adventurous then any detailed photos of the transformers and chokes that may show their origin (eg. Partridge models) - but that detail may be obscured by the chassis if only small cutouts are provided.
RE: "Genuine D. T. N. Williamson Amplifier", what do I have here? - trobbins 05:07:09 02/17/17 (0)
Some amplifier history in link, from:
http://dalmura.com.au/projects/Williamson.php
- http://dalmura.com.au/projects/The%20Williamson%20Amplifier% (Open in New Window)
RE: Here is an advert for this amp - Iain42 13:29:03 12/05/16 (2)
Found this today and it reminded me of this thread. Check it out 1953.

High sensitivity, wide dynamic range, low distortion, and smooth frequency response. Pwk

http://www.itishifi.com
- RE: Here is an advert for this amp - rheingold 18:26:14 12/05/16 (1)
  Thanks so much for this! Very interesting.
  
  Do you have a bigger version of this? Or possibly a link to where you found it?
  - RE: Here is an advert for this amp - Iain42 21:10:23 12/05/16 (0)
    I go through so many old hifi mags I can't narrow it down.
    Send me an email and i'll fwd what i have. The original scan wasn't that great.
    
    High sensitivity, wide dynamic range, low distortion, and smooth frequency response. Pwk
    
    http://www.itishifi.com
The same pictures and the same question were asked by someone.... - viridian 17:45:14 12/04/16 (12)
...with a different user name in the amp category on Nov. 8th. Are you the same poster using a different user name?
Link to post below:
- similar post, different poster (Open in New Window)
Edits: 12/04/16 12/04/16 12/04/16
- RE: The same pictures and the same question were asked by someone.... - rheingold 17:59:11 12/04/16 (4)
  No, that's not me. Wow. I can only assume that was posted by the people selling the amp.
  
  Thanks for this link, I'll read up on it.
  - Fair enough, but if the seller was fishing around here... - viridian 18:05:32 12/04/16 (3)
    ...they would've been sensing that the amp had real collector value. Why would they then sell it at an estate sale? Especially since they said that they were taking offers and would sell it in December.
    
    Edits: 12/04/16
    - RE: Fair enough, but if the seller was fishing around here... - rheingold 18:10:30 12/04/16 (2)
      My guess is that the lady who ran the estate sale posted here to find out about it. The sale ran for three days and she didn't have a price on the amp, she wanted bids. She knew it wasn't junk, but she didn't want to deal with selling it online. Told me she'd been burned by the ebay/PayPal system before.
      I was the last man standing and hauled it off at the end of the sale.
      That's the story, I have the amp now. And, it is December.
      
      Edits: 12/04/16
      - Kool Story - airtime 18:37:29 12/04/16 (0)
        
        In Reply to: RE: Fair enough, but if the seller was fishing around here... posted by rheingold on December 04, 2016 at 18:10:30
        
        Well congrats and now let's here your review!!!
        
        odd amp.
      - Congrats, very, very, nice piece. You did good! nt - viridian 18:11:55 12/04/16 (0)
        
        In Reply to: RE: Fair enough, but if the seller was fishing around here... posted by rheingold on December 04, 2016 at 18:10:30
        
        nt
- RE: The same pictures and the same question were asked by someone.... - airtime 17:58:03 12/04/16 (6)
  I remember that because how many Williamson amps have I seen - ONE!
  - http://db.audioasylum.com/mhtml/m.html?forum=amp&n=216665&hi (Open in New Window)
  - RE: The same pictures and the same question were asked by someone.... - rheingold 18:19:54 12/04/16 (5)
    Well, there must be at least 99 of them. Both the power supply unit and the amp I have have matching serial numbers of 99.
    
    I appreciate all the input, thanks.
    
    So I guess my chances of finding another one for a stereo setup aren't exactly great?
    - Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... - viridian 18:33:39 12/04/16 (4)
      ....but then again, with a nice, early, Klipschorn, VOT, or WE speaker, you would have one hell of a mono system. Stereo is for wimps. What a great holiday present you got there.
      - RE: Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... - Bold Eagle 15:13:29 12/05/16 (2)
        
        In Reply to: RE: Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... posted by viridian on December 04, 2016 at 18:33:39
        
        It's an English amp, it needs to be mated with a Tannoy coaxial speaker.
        
        Jerry
        
        RE: Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... - Crazy Dave 20:34:23 12/05/16 (0)
        
        In Reply to: RE: Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... posted by Bold Eagle on December 05, 2016 at 15:13:29
        
        The Tannoy is a great choice, however, Goodmans Axiom 80 drivers or one of the many Wharfdale systems would also do. Of course a classic Loather system might also be interesting. i am partial to the Loather Hegemony reproducers due to the shear insanity of the design, but a single Wharfdale W90 would be killer in a mono system.
        
        Dave
        http://www.lowthervoigtmuseum.org.uk/lowtherHegeman.html (Open in New Window)
        
        Right you are Jerry! nt - viridian 18:55:59 12/05/16 (0)
        
        In Reply to: RE: Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... posted by Bold Eagle on December 05, 2016 at 15:13:29
        
        nt
      - RE: Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... - rheingold 20:19:29 12/04/16 (0)
        
        In Reply to: RE: Bad news, serial numbers don't always start at the number one. It would be cool to mate it up though.... posted by viridian on December 04, 2016 at 18:33:39
        
        It was an old TV/audio repairman's home. Felt really weird rummaging through a lifetime of accumulated stuff that now nobody wanted. I hauled of hundreds of tubes (nothing special, just a few picks among the bunch) just to save them from the trash. Got a few vinyl albums, some tools. Much went into the dumpster. Lots of small parts, pots, screws, connectors, I just didn't have room or need for. Kinda sad, really.
        
        Edits: 12/04/16

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