Idea for product: a Carver-tweaked 2-channel tube signal processor. I'm thinking a buffer-type device that can go between analog source and preamp or between pre and amp and allow the user to experience "the tube sound" without the investment of buying valve amplifiers. Since Bob Carver is a master of tweaking circuitry to attain desired sound qualities perhaps add a control so the user could change the way the system effects the signal. (Heck, I'm sure this could be done much more efficiently with a DSP and not need tubes at all... so maybe a combination DSP and tube buffer so it fits with the product line?) Various types of tubes or tube effects could be created, or simulated, allowing the user to customize the sound of their otherwise solid state system to suit their mood or the type of music being reproduced.
Hey, maybe add a Sonic Holography circuit while you're at it. I used to love the sound of that effect in the old Carver preamps.