It seems that a lot of people are really worried about tone sucker pedals. I need an AB pedal so, here�s the question.... Is AB-2 2-Way Selector a tone sucker pedal?
Bossarea is correct. It uses the flip-flop circuit. I don't want to have that battery die while I'm playing, so I sold it. Tone suckage is negligible at the worst. A 9VDC jack would have been nice.
Still, I think that battery will last you for a year or two. Just a matter of taste.