Can you safely plug a DC power supply (For a Digitech Whammy Pedal 4) into the “courtesy” outlet on the back of a Voodoo Labs Mondo power supply (all AC outputs AFAIK) :
UPBRIGHT NEW 9V AC / AC Adapter For DigiTech Whammy Pedal I / Whammy Pedal II / Whammy 4 Guitar multi effects pedals 9VAC Power Supply Cord Cable PS Wall Home Charger
Power supply for Digitech Whammy Pedal : r/guitarpedals
HQRP AC Power Adapter for DigiTech Whammy I / II / 4 Guitar Multi Effects Pedal 887774328192 | eBay
9V myVolts replacement power supply compatible with Digitech Whammy 4 Effects pedal | Fruugo US
ABLEGRID 9V AC-AC Adapter For DigiTech Whammy WHAMMY4V N2082 Pedal Harman Music 9V AC Power Supply Cord Cable PS Wall Home Charger Mains PSU - Newegg.com
MyVolts 9V Power Supply Adaptor Compatible with/Replacement for Digitech Whammy 4 Effects Pedal - US Plug - - Amazon.com
Amazon.com: Accessory USA 9V AC to AC Adapter for DigiTech Whammy Pedal I/ Whammy Pedal II/Whammy 4 Guitar Multi Effects Pedals 9VAC Power Supply Cord : Electronics