J jsalino New member Joined Sep 1, 2014 Messages 1 Reaction score 0 Sep 7, 2015 #1 Serial number 22xxx Mark III simul class no marking above power cord below power cord looks like MB with an arrow underneath it written with a black sharpie any help from the experts would be truly appreciated thank you
Serial number 22xxx Mark III simul class no marking above power cord below power cord looks like MB with an arrow underneath it written with a black sharpie any help from the experts would be truly appreciated thank you
Markedman Well-known member Joined Jun 26, 2013 Messages 1,453 Reaction score 22 Location Norfolk, CT Sep 7, 2015 #2 Blue stripe
F fretout Well-known member Joined Mar 10, 2009 Messages 266 Reaction score 15 Sep 12, 2015 #3 Blue stripe...possibly green stripe. Take a picture of the guts...particularly the power tube sockets so that we can see if it's wired in triode (blue) or pentode (green)...
Blue stripe...possibly green stripe. Take a picture of the guts...particularly the power tube sockets so that we can see if it's wired in triode (blue) or pentode (green)...
