Hey there.. that is a really cool catalogue... I own a 1972 OR120 head... judging by the above catalogue it would be: cat no. 112... Is there any means of verifying the Ser. No. etc with anyone here or to be certain of the date of manufacture? I will go and open the amp up tonight when I get home an...

Now having read the above message more thoroughly... I guess I'm going to need to recap too. Which is probably why I popped a fuse everytime I tried turning it on using my friends set of EL34's from his JCM900!!!

Hi there... I have a pristine 1972 OR120 head (I traded a behringer 16ch Eurorack mixer for it a 5 years ago!!!!)... it just needs a new set of EL34's, otherwise it is in 100% working condition) the only reason why I haven't started using it after 5 years of ownership is because I also have an origi...