This is a 12V fixed-voltage MyVolts-bred power supply adaptor designed to meet exactly the power specification of your Apogee Element, Quartet, Thunderbridge Audio Interface. Specifications: - Output voltage is 12V - Max. output amperage is correct for your device - Output tip is the right size specification - we've tested it thoroughly - 3 pin plug for use with UK Irel wall sockets - Input voltage is AC100-240V, 50\/60Hz In addition, this myVolts-bred replacement power supply for Apogee Element, Quartet, Thunderbridge Audio Interface is: - Compliant with all safety stards, features overvoltage, overcurrent short-circuit protection to protect your device from damage - RoHS CE-certified - Energy Star level 6 approved, guaranteeing more efficient delivery of power to your devices, at less cost to you - Covered by a 2 years' warranty: if the power supply fails within 2 years from the date of purchase, we'll replace it, no worries