Hi, I am currently torn on which head unit to get, I currently have an Ampeg SVT 4 pro paired with an Ampeg 8x10 classic cab. I am really specific in my tones and want every string to be equal in volume. I was originally going to get an Ampeg SVT Classic, but the one I purchased refused to work and GC gave me the 4 pro as a settlement. I have my own amp tech who said he can personalize my head, but I am worried if I stick with the 4 pro I will wish I had the classic. Any opinions from real bassist that understand sound and tone would be greatly appreciated.