Palmer | 4 years ago

http://www.palmer-germany.com/mi/en/Purifier-Power-Conditioner-PPURIFIER.htm

Model name: PPURIFIER
Power Conditioner

Designed especially for the use with effect pedals and pedalboards, the Purifier minimizes and removes noise induced by poor DC power adapter construction delivering clean DC power to your stompboxes. It provides standard 2.1 x 5.5 mm barrel jack connectors and automatically detects your DC power supply's polarity. The Purifier cleans any output voltage from 5 to 30 volts DC.

Palmer® is a brand of Adam Hall Group.
https://www.adamhall.com