Exactly what I needed! Today I replaced my cheap Tripp Lite surge protector with a Furman PST-8D and the faint background hiss I was hearing from my PC -> USB DAC -> Phone amp at high volume is now completely gone. BTW, my PC's power supply, LCD, and printer are plugged into Furman "digital ultrasonic noise filter" outlets, while the DAC and headphone amp are plugged into "line-filtered" outlets. Never heard such a black background on this amp.
Black 6 Outlet Surge Protector Power Strip with Rotating Flat Plug, 15A 120V, 4ft Cord
12 Review
Power Strip Tower with 14 Outlets, 4 USB Slots, and 6ft Cord - Universal Charging Station by Lovin Product (1-Pack)
11 Review
Southwire 34930 Surge Guard 30A: Full Protection Portable with LCD Display - Superior Safety in Sleek Black Design
12 Review
Fellowes 10-Outlet Metal Split Surge Protector - 1,250 Joules, 6ft Cord in Black and Silver
12 Review
Tripp Lite TLP1008TEL 10 Outlet Surge Protector Power Strip with 8ft Cord, Tel/DSL Protection, RJ11 and $150,000 Insurance - Silver
12 Review
Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, C/C, 10A / 2500 W white 1.8 m
30 Review
Extender Xiaomi Mi Power Strip 6 CXB6-1QM NRB4025CN, 6 outlets, 10A / 2500 W white 1.8 m
27 Review
Toldear Multi Plug Outlet π‘ Extender with Rotating Plug - White
12 Review