My fender twin. Date?

MIKA-the-better-one

Heres the back of my fender Twin, now from what I understand is that its a 72/73 model, however the back looks a bit different to other 72/3 models, hence the big red knob (hum cancelling??? I dont know. Any one got a date? It could just be that I am really dumb and cannot pick up on this technical stuff. Either ea it needs some new caps.
The twin is not however a push pull master volume model, meaning it must be older? early 70s.

AlanRatcliffe

http://www.guitarforum.co.za/amps-speakers-and-valves/dating-an-old-fender-bassman/msg57727/#msg57727

The big red knob is the voltage selector found on export versions (i.e.any amp made for the European/SA/Aus market). Leave alone - there's a reason it has WARNING! written below it, BTW.

MIKA-the-better-one

YE I wont touch that, Does that mean I could take this to the USA and use it there pretty easyly?

AlanRatcliffe

MIKA the better one wrote YE I wont touch that, Does that mean I could take this to the USA and use it there pretty easyly?

Yup - it has a 117V setting.

MIKA-the-better-one

A37057 meaning its a 72 twin. Google is such a good tool.