Postby jagermike66 » 02 Sep 2011, 01:44
I own a MA50H and even though on paper I get 3dB less headroom than the 100 watt version, I can still drown out a hard hitting drummer when my amp hits the sweet spot! The difference really isnt that much between the 2. Before I would do something as drastic as tube pulling, try some different tube and speaker combinations. Ive heard of people blowing output trannys after pulling 2 tubes which is not a cheap fix! Probably would have been cheaper to sell the 100 watt model then just buy a 50 watter! There are EL34s that break up a bit earlier (groove tubes i think?). Also putting a JJ pre amp tube in V2 helps tame the fizz. Are you running the stock speaker cab with your MA? Cos those speakers are very fizzy IMO. Greenbacks or V30s suit the MA much better and sound nicer when you drive them. Also have a look at the bias too, if under biased the amp could sound a bit thinner.