A while back, I sold my Ashdown LB30 and regretted it from day 1. So recently, I saw a used CTM-30 and bought it, and I love this little amp. The stock Ruby tubes break up really easy and I remember my LB30 having JJ’s and it didn’t have this problem. So I will be re-tubing it very soon! Now, my question is are there any tubes that will affect my midrange? I also have a CTM-100 and it has some of the nicest, creamy, tubey midrange I have ever experienced playing through an amp. The CTM-30 is a bit mid scooped and I am wondering if there are any tubes (reasonably priced) that will help this, or is it just part of the amp itself? I’m leaning towards all JJ’s as I have read it is more just how the amp is voiced than anything else, and JJ’s are reliable and consistent in my experience. I’m playing a EBMM Sterling through a Philosophers tone compressor, and using Greenboy Bassic cabs. So there is a slight dip in the 500hz range on the cabs which I try to balance out by boosting the midrange control on the Sterling, which is roughly in the same frequency range. The CTM30 just feels a bit boomy unless I cut the bass, and then it feels a bit thin (in a variety of different size/shape rooms, the result is always roughly the same). The low end on the 100 is very crisp and not muddy at all, in any room I have played it in and the midrange is just about perfect. Is this just a difference between KT88 and EL84 power tubes? Thanks in advance.