I just got my "new" rig about a month ago and I love it! I bought an Ampeg V-4 from the Early 70's (not exactly sure on the date) along with a 412 cabinet from 73. I absolutly love it! The sound is HUGE! If I turn it up to 10 o clock - #1 I'm deaf and #2 I get killed my my neighbors!!! I also built a treble booster (Dallas Rangemaster schematic) in order to give me some classic rock distortion when I use the rig for guitar (pretty sweet natural distortion but again...I don't want to go deaf)!