THE SHORT STORY ABOUT THE 350B IS IT'S A 2000S WITH A NEW FACE AND IT'S 150 WATTS IT CAME OUT IN 1972..THE OLD 2000S HEAD CAME OUT IN LATE 68 AND SHOWED UP IT THE 69 CATALOG AND THAT WAS RATED AT 120 WATTS.....THEY ARE AND ALWAYS WILL BE THE T-REX OF BASS HEADS . THEY BOTH WILL BLOW THE BALLS OFF THE WALLPAPER. SO, YOU'VE GOT YOUR SELF A GEM...WHEN YOU DIE, TAKE IT WITH YOU.