Hi: I am considering a MB-150E III head. And would like to get some feedback from users out in TB land. I am specifically talking about the head, not the combo. I have been running two Bag End S15Ds with a 1984 GK400RB (love the sound, and more than enough power for my needs). However, the amp is now acting funny (static noise and cutting out). It has been to the tech, however since it is intermittent problem, all he did was solder the connection joints and give it back to me. I have an 800RB but to my ears it sounds quite different than the 400RB (even though it is suppose to be the same preamp, go figure?!?!). So I would love to hear any info available about the GK MB-150E III head.