For 30 years, two cab1960 trs old and 20 years since the 1960 SERIES JCM800 with 4x12G12T75 .. In the first of the Greenbacks and Vintage 25 in the other two G12T75, which has said the worst and the best. Try having a lot of heads and baffles DIFFERENT, I notice especially need to know to make the right connection. The good scratch, good or pdalier rack, good head and cabinet. I'm running this with a baffle 1960A JCM900 head dualRV (while running on the Greenbacks JCM800) ... I confirm that the sound of G12T75 is excellent if it is well known to use it. Tips: they need a mini head of 100 watts, and climb the towers. is between 4 and 6 to the master's (Marshall legend) is in shape. And I would do the same choice ... If you want Marshall sound, buy Marshall, if you want the Mesa or Fender or Rivera or Engl .... etc. ...