70's Marshall Superbass

[marshalltsl]

Hi

I don't know about vintage Marshall's. It seems like a 70's JMP but without rear panel (no serial number) and chassis tag. It is moded. Two extra holes. One extra hole is for a master volume.
Seller say It is from 1973-1975. It was replaced valve sockets and was replaced some caps.
Does anyone know anything else?

Thanks

Marshall Plexi JMP SuperBass 100 de Segunda mano por 1.445 EUR en Torrefarrera | Wallapop

¡Gran oportunidad! Marshall Plexi JMP SuperBass 100 de segunda mano por 1.445 EUR en Torrefarrera. Vendo amplificador Marshall Plexi JMP Super Bass de entre 1973 y 1975, sonido clásico Marshall, vale para bajo y guitarra eléctrica, modelo usado por Malcolm Young. En la última rev

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[67plexi]

1974 Marshall switched to the green PCB 1973 the board was tan. Should be a date code on the blue filter capacitors.

 

[Clockworkmike]

Thats a killer amp my friend! Sorry im no use on dating it. Looks wonderful though!

 

[Don O]

Most bare board vendors will have a lot and date code silkscreened on to the board.

 

[Cadorman]

What's up with the bare wires between the power switch and power plug socket? Something looks odd there.

Oh, and nice crotch shot. Could definitely do without that.

 

[eSGEe]

at least he is wearing pants.....................................

 

[marshalltsl]

Next Monday I will try It. Let's see. I remember when I tryed one from '74 and other one from '73. Their serial numbers were very close but they sounded different from each other.

 

[67plexi]

I still have a 1968 1969 1971 1973 Super Lead 100 the 1971 and 1973 are the most aggressive out of the bunch.

 

[syscokid]

Oh, and nice crotch shot. Could definitely do without that.

You mofo! You made me look...

What's up with the bare wires between the power switch and power plug socket? Something looks odd there.

To me, that looks like some kind of lacing for wire management.

 

[marshalltsl]

Guys I'm afraid. I have friends that know the seller. It is really impresive that he own a Superbass. I'm thinking this is a stolen amp. I'm not saying that seller has stolen it, but I want to know where he got it from and since when he has it. Let's see on Monday.

 

[syscokid]

I'm fairly certain that was a warning and not a suggestion to scroll back up there and take a better look.... At least that's how I took it.

Reverse psychology: If one wants somebody else to "look", just tell them "Don't look!"...

 

[marshalltsl]

I played with It this afternon. I can disassemble it and see the codes on some components. I think it's a early '76 Superbass. It sounds and works fine but It don't sound very good. Maybe It has cold bias or maybe It has worn tubes. It was replaced at least 5 components from pcb board. The master volume kill his soul. I tryed with my 1960 AHW and with my LP std. I have money on my pocket but I'll not buy It.