Thanks tamule1. I have a Vinnie Rossi Lio with 2 tubes in it but the tubes don't soften up voices & guitars. What is it about the Primaluna Prologue that you prefer over the CJ 2550se? Do you just prefer tubes generally over SS? I'm skeptical about getting a tube amp only because SS just gets bass so right for me although tubes do take that sibilant edge off of voice & ringing guitar.