Amazon.com: 25VA DC 5V Bench Linear Power Supply Audiophile,Desktop Power Adapter Regulate 5 Volt 3A 4A for Raspberry pi 3 Model A+ B B+ Plus Micro USB : Electronics
BRZHIFI Audiophile 5V 1A linear power supply Original E-type transformer For set-top boxes, players and other audio equipment - AliExpress
iPower2 by iFi audio - Ultra Low Noise DC Power Supply with international options.