I've only heard that amp live once, when Return to Forever did the reunion tour. Stanley Clarke had it onstage for his Double Bass. Frankly, it sounded terrible. The Baby Blue went through several incarnations ih a few short years. First there was the Baby Blue 2x8, then the Baby Blue 2x8 version 2, then the Baby Blue II 10", and finaly the Spelbinder Blue, followed by the Natural Blonde. IMHO not worth the effort, unless it's a Baby Blue 2x8, in pristine shape and you have a tech run a bypass for the Aural Enhancer. Even then the speaker surrounds can have issues and the original Bag End 16 ohm drivers are no longer avaliable nor are the Celestion 8 ohm drivers whicn don't sound that great. The head is underpowered and a single 12AX7 had little effect on the tone quality. Just my take of course.