Master Model 50w Mk2. Lead

Discussion in 'Let's Talk Vintage' started by claghorn, Jun 2, 2020.

  1. claghorn

    claghorn New Member

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    full - Copy.jpg back - Copy.jpg front - Copy.jpg [​IMG] This is my amp. Still figuring out how to post three pics. Where to put the urls? I bought it in the mid 80's. I researched the serial number and it indicates it is a 1978 model. 01777K. Is this considered a vintage Marshall Amp? It has no mods. The vent is on the back not the top.
    Is this then a Marshall JMP Master Model 50w #2204?
    It does say JMP on the front but I find Marshall history confusing.
    It has both a master volume and pre-amp knob. I read something about Marshall cascading the pre-amp to give extra pre-amp saturation in order to produce saturated tone at any volume. I plugged in two cables at the same time into both inputs of the amp and only one produced sound. I think this means it has the cascaded circuit. If both produced sound then it would be a non-cascading circuit. What do you guys think? What would it be worth on the market today?
     
    Last edited: Jun 2, 2020
    LP Freak and ampmadscientist like this.
  2. claghorn

    claghorn New Member

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  3. dro

    dro Well-Known Member

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    Yes 2204 Reverb has them on sale anywhere for $1800.- $2500. If someone offered me 2500 for mine it would be gone.
     
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  4. ampmadscientist

    ampmadscientist Well-Known Member

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    Can't see the photos.
     
  5. claghorn

    claghorn New Member

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    Can anyone tell me how to post pics? How hard can it be? Site said at some point my pics are too big? So I created urls and still can't post. I feel as if the moment is gone as 52 views have taken place all with out seeing pics. Sad.
     
  6. neikeel

    neikeel Well-Known Member

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    Do you have an on line host? If so it will have a direct link.
    Click on the landscape icon above and paste your link into the box.
    If not you can use the media section of the forum but the space is limited.
     
  7. ampmadscientist

    ampmadscientist Well-Known Member

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    Don't be sad, get even.
    1. load your JPEG photo into a photo editor and reduce the size, typically to about 35% of original.
    You can use microsoft paint, or other editor tool
    2. Save the photo as PNG. or GIF format which can be a smaller file size.
    3.
    Also you can upload your media directly, into your own media album in this forum.
    Click "media", at the top of this webpage, and create an album.
    You can then upload JPEG without reducing the size of the photo, into your album.

    4. Open your album, click on the photo.
    then copy and paste the photo into your post. It will reduce automatically.
     
  8. claghorn

    claghorn New Member

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    Thanks guys. I reduced the size. I guess they're right. The pics are big. The head looks like a trapezoid.
     
  9. Matthews Guitars

    Matthews Guitars Well-Known Member

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    Yes it's a 2204. Yes it's "vintage", that being a 60s or 70s JMP and not a reissue.

    The JMP series/era started in the late 60s and ran to about 1980, at which point they transitioned to the JCM800 series, which marked the end of the distribution contract between Marshall and Rose Morris. A contract that Jim Marshall was glad to finally see come to an end.
     
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  10. bloomsounds

    bloomsounds New Member

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    It's cool to see one in such great shape! I got my '78 Master Volume for a great deal but it sure is beat up. Best amp I've ever owned, though.
     
  11. Matthews Guitars

    Matthews Guitars Well-Known Member

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    If your amp is in beat up shape, why not recondition it? New tolex and trim, new faceplates front and rear, new knobs...sucker'd look good as new. Everything is available now. Including the faceplates. :D
     
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  12. Chris-in-LA

    Chris-in-LA Well-Known Member

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    Yes, if it has the pre-amp and volume and only two jacks, the preamp is cascaded.
     

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