I'm having problems getting a tight low end on my 75 RI /w emgs out of my SWR redhead. But when I use my headphones, the sound comes out perfect. My P-bass is the only bass that sounds good off my redhead speakers. The Gallien-Krueger MB150S112 (amp I used to test out basses at sam ash) sounded better then my swr, but I'm not going to pay that much for a small combo. Should I start looking for a another rig? Is it my 75RI equip with EMGs? I was thinking about getting the J-retro for my 75ri, but rather spend money on amp/speaker setup then the preamp.