Vintage Marshall Super lead questions

[jonl]

I am looking into a 74 Super Lead JMP.
I have noticed some have Polarity switches next to power and standby and some do not.
The JMP's that don't have the Polarity switch seem to go for a bit more money.

I am guessing there is more under the hood that makes the 2 switch version sound better? Is that why they go for more?

 

[marvcus]

I thought the ones w/ polarity switches were export models.

FWIW, EVH's has the three switches.

 

[cardinal]

Polarity switches are the US/export models. No voltage selectors on those, either.

 

[stratotone]

If I was looking at a '74, I'd probably look harder for a '73 that was wired on a turret board. All 74s are PCB, as are some '73s.

 

[steve_k]

If I was looking at a '74, I'd probably look harder for a '73 that was wired on a turret board. All 74s are PCB, as are some '73s.

^^^ This ^^^