Signal Flex PS9 Multi-Pedal Power Supply Electric Guitar Electronics Multi-pedal Power Supply At last an ac/dc adaptor that will power up to 5 effects pedals. a single unit replaces 5 traditional power adaptors. fused 120v ac line-in is coverted to five 9v dc outputs (neg. tip). 5 cables are included to connect each effect. Model: PS9 Model: PS9. Multi-pedal Power Supply At last an ac/dc adaptor that will power up to 5 effects pedals. a single unit replaces 5 traditional power adaptors. Fused 120v ac line-in is coverted to five 9v dc outputs (neg. tip). 5 cables are included to connect each effect. Multi-pedal Power Supply. At last an ac/dc adaptor that will power up to 5 effects pedals.