So I've heard about this drug called 300B. It's an expensive habit, but users say it makes you hear things in a whole new way, that it gets you to a place most other tubes can't. For those of you hooked, tell me all about your tube trips. 1. What makes 300B special to you over, say, 2A3 or 45? 2. What genres of music do you listen to with your 300B amp? 3. Try and describe the 300B magic?