Just thought I'd share an interesting occurrence. I had a rehearsal/audition last night, and I threw together a quick small pedalboard instead of lugging out my usual big board. I didn't check it before leaving the house, but I had a TC Electronic Polytune first in my chain, running into an Analogman Sunface. I opted to use the Polytune's extension power supply jack to daisychain power over to the Sunface. When I got to practice and powered up. No signal. I quickly noticed the Polytune wasn't working. After trying a few things, I disconnected the daisychain to the Sunface, and went with a battery in the Sunface. Now they both worked but the Sunface had an extremely weak signal even with a fresh battery. I decided to swap out the Sunface with a battery powered Sarno Earth Drive, which I brought along as a just in case pedal if the Sunface didn't fit the sound/tone needed. There was a small part of me that was worried the Sunface was positive tip instead of negative, and I had damaged the pedal. Today I first used a voltmeter to check that the Sunface was indeed negative tip. Then I set up the same scenario just using the Polytune and the Sunface with the same results. I then powered both pedals using a Voodoo Lab Power Supply, and both pedals worked without a hitch. I then went back and used different a different drive pedal, a Bondi SickAs, powered by the Polytune via the extension power supply, and they both worked fine. So, am I correct in assuming, there is a loading issue that occurs when using the Sunface? Anyway, just thought I'd share. Maybe others have encountered the same thing.