Hey, I have a Markbass rig (CMD 102 combo amp + 151HR cab). I love the the rig. It gives me massive tone and volume. It also is amazingly light considering how big it sounds. But all that comes with a price. The solid state just doesn't give you that tube warmth. I know that getting an Ampeg head would deliver the tube sound, but i don't want to take that step right now. To warm things up, right now I'm using the EBS Valvedrive as a preamp. It's not bad. My question is; what are the very best tube preamp/pedal options to get more of a tube sound? ps: looking at the Markbass tube Compressore as an option - seems to have good reviews.