I mostly play through a Demeter vtbp201s live, so I use the built in jensen transformer. I recently bought a Radial prodi to have one just in case. I also have a pyle-pro pdc21 I acquired years ago. I usually practice through my markbass cmd102p at home, but decided to play through the radial just for fun. I plugged it into my mackie 402-vlz3, that I run into a pair of KRK Rokit 6 and a 10" sub. I then a/b'd the pyle-pro and radial and to my surprise the pyle-pro sounded better. And not just a little bit. Even my wife, who is a non musician and essentially tone deaf, thought it sounded better. I really wanted the radial to sound better, but the pyle-pro was so much more dynamic. I don't know how they would compare through a full pa, but for the last few days I've been practicing with the pyle-pro only. The transformer can't be that good, it's not shielded and the whole di costs less than the tax on the radial. I also ran the bass straight in just to be sure that the pyle-pro was doing something and it definitely was. I'm planning on using it at the next gig to see if it does sound better live.