Custom Nelson Pass B1 Buffer

zingo
zingo Posts: 11,258
edited May 2013 in For Sale (FS) Classifieds
I built out this B1 buffer preamp with ANSAR caps and silver DHLabs wire. It's a board from DIYaudio, and has Dale resistors, a SMD 25k stepped attenuator, and a regulated 19v power supply. It's the definition of form follows function, but sounds awesome, and is only being replaced with my new passive preamp, which will be coupled to my upgraded GF 6SN7 buffer.

$125 plus actual shipping.
Jake
Post edited by zingo on
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    Buffer with original capacitors.

    photo (1).JPG
    Jake
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    Upgraded ANSAR capacitors as the B1 currently sits; two sets of alternate capacitors will also be included for your DIY enjoyment.

    photo (2).JPG
    Jake
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  • strider
    strider Posts: 2,568
    edited May 2013
    Someone needs to buy this! I have a B1 without the boutique parts and a fairly plain jane power supply and it sounds pretty damn good. I'd imagine this one is a notch or two above!
    Wristwatch--->Crisco
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    Thanks for the nice words!
    Jake
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  • strider
    strider Posts: 2,568
    edited May 2013
    Looks like it would fit in this chassis quite nicely:

    http://www.8audio-mall.com/servlet/the-539/220x311x90mm-All-Aluminum-Case/Detail

    Swap the binding posts for RCA jacks and you'd have yourself a pre that sounds leaps better then one would expect for the give or take 2 bills you'd have invested.
    Wristwatch--->Crisco
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  • blairfrischx
    blairfrischx Posts: 259
    edited May 2013
    So it's powered by 120V from the wall and the regulated supply shares the board? It looks like you just have a power cable dissected and screwed into the terminal block.
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    There is the power filtering/regulation on the board, but the 19v transformer and initial regulation is external, but hard wired to the board as you noticed; the power supply does unplug on the wall side. I think it's rated at 3A, or something way more than the B1 needs. :)
    Jake
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    Mother's Day bump.
    Jake
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    Sale pending
    Jake
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    Sold!
    Jake
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  • Systems
    Systems Posts: 14,873
    edited May 2013
    Jake, you need to get some cases my friend..........
    You do some excellent work, why not show it off in a good case?
    Testing
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  • Systems
    Systems Posts: 14,873
    edited May 2013
    Get ya a decent mitre saw for cheap at a pawn shop, and make your own with some decent wood if nothing else.
    I am 100% sure the SQ offered from your projects deserves a good quality case.

    I would guess you build this stuff to try, but you have to remember, people like myself are interested in such things to use.
    Especially this one.:cheesygrin:
    Testing
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    You're probably right... I happen to think the industrial design of circuits and components looks good, but I know I'm in the minority; ask my wife. :lol: I built a black wood chassis for an amp once with a Ferrari gloss red front panel which looked pretty good, and my father-in-law still has that one. I have a table saw, chop saw, jigsaw, but my only complaint is it doesn't add to the sound... :mrgreen:

    This is currently the view from my couch which I think has mighty sexy industrial design, and sounds even better. Luckily I didn't build it, so it actually has a chassis!

    3.jpg
    3.jpg 251.8K
    Jake
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  • Systems
    Systems Posts: 14,873
    edited May 2013
    but my only complaint is it doesn't add to the sound...

    The 1964 VW Bug bumper (JK:lol:) you used for this projects adds nothing either, sound or beauty.

    So at least you will be adding some beauty to your projects with a good case!:cheesygrin:
    Testing
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  • Systems
    Systems Posts: 14,873
    edited May 2013
    I think the internals look great, and know the designs are proven to sound excellent, so the next step would be alittle case work.
    Even a pre made would set it off.
    Look around ebay, last time I checked they had some really good cases on the cheap.
    Would really take these to the next level! IMHO.

    That pic is awesome!

    Wood on the sides, and plexi front and back would look cool!
    Testing
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  • EndersShadow
    EndersShadow Posts: 17,596
    edited May 2013
    Zingo, that case is AWESOME!!!!
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
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  • zingo
    zingo Posts: 11,258
    edited May 2013
    I can't argure with that, and the VW bumper comment is the best thing I've heard all day!
    Jake
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  • Systems
    Systems Posts: 14,873
    edited May 2013
    zingo wrote: »
    I can't argure with that, and the VW bumper comment is the best thing I've heard all day!

    No offense Jake! LOL!
    I just see some great potential here.
    Just pleading my CASE!:lol:
    Testing
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