The best $20 I ever spent.
I got this yesterday and tried it out this morning. I was so impressed I ordered a second one for my 5 real amps. Right now I have this one going to my Kemper Stage, Kemper Rack, Quilter Steelaire amp and Korg Tuner with a output left over for the Tone Master Pro when I get a longer cable. I had no idea how much fun it could be to blend 3 amps, 4 will be even better.