I placed it second to last in my signal chain before my Ibanez AD-9, and it sounded really dark and dull at first. With the delay engaged, I got a boost in signal and a very increased treble that was missing before! I think some of you also described this, so I was almost expecting something like this to happen. It's probably something with the output impedance wanting to see a buffer. So I placed my tuner behind the Caveman and, behold - it came to life! No more change in sound with the delay engaged, and no more dull and quiet signal!
That was probably me complaining about a treble and gain boost when I engaged my delay, trem, or boost pedals which are all true bypass after the Caveman. I stuck my KTR with the buffer switch engaged after the Caveman and now everything is back to normal and works great.
Thanks for the tip and pointing me in the right direction or the Caveman would have been collecting dust or being flipped.