Input Jack for a Marshall JMP-1

[JustMike]

 I cannot find a part number and I need to replace one. The schematic just says MONOP under the jack (I think, hard to read). I've also read on other forums that the part some online retailers sell is not the correct part. Can anybody help?

[jjasilli]

https://hoffmanamps.com/MyStore/perlshop.cgi?action=template&thispage=JacksPlugs&ORDER_ID=189572946

[JustMike]

I don't see the exact part here.
 The part I need is threaded on the inside.


The Tube Amp Doctor has them, but the shipping across the pond for a $5 part is $30.00!

[sluckey]

Better get several while you're at it. 

[2deaf]

Looks like an S4 series cliff jack.  Tubesandmore.com has those as well as inside threaded nuts.  If you are real picky, they can order you exact parts directly from Marshall.