I came across 2 Altec mic pre-amplifiers last week – each 4 rack spaces and 50 pounds. One works perfectly and one has an issue (don’t we all). The issue one has a weird distortion out of the monitor jack. It’s my favorite, everybody already has good sounding stuff, right? It turns out I had to move half the rack stuff in my stuff to fit these Atlecs in. And I did – The End.