I don't know what the story is with the different versions here. My r1000 has the 2 leds in the output section and looks like the one pictured (except maybe the main volume is directly under one of the amp knobs. It's not in front of me) and it definitely has a tube. I just changed it the other day. I must have read the material on the series 3 one when I bought it forever ago and carvin sent me the good one because I remember "tube emulator." I only just opened the thing to make sure all heat sinks and compound was intact and to clean it out in there because it was getting a bit too hot and cutting out. It's fine now. So 15 years later I find out there IS an actual tube in there! Just so happened to have a couple new ones, yay. It's been a while since I used it (I play guitar mostly) and the thing I can't figure out our find info on is, in bridged mode, what to do with the amp 1 amp 2 knobs! It's not in the manual and depending what I do with them I get some strange behaviour. Should they be left down? Up? One up one down? Hope somebody is still following this thread 
