I just received this beautiful Mark IV late last night... See below. And I realize that the top row of knobs is very close to the top edge of the head-shell making it a little difficult to see what the knobs are set at. There's nothing wrong with the amp. It's just how it is. So I googled Mark IV pics and it seems though not constant, many of the newer Mark IVs are like this. Both heads and combos, shorts and mediums. Anyway, I never noticed this before.