Originally Posted by Currawong
Vaunix make USB-powered signal generators and made a USB hub for them with a better power supply inside than you normally get. I've found it works well with audio gear that uses USB power.
Well, how do Vaunix and other similar products relate to the so called (Mini) Travel Surge Protectos with USB Ports?
To what extent those mini/travel surge protectors filter the noise of AC power?
Typically noise filtering is up to 44dB or something like this. How good is this? How useful is this feature?
My Toshiba Satellite laptop uses 19V & 3.42A AC power.
Belkin BST300 3-Outlet Mini Travel Surge Protector with USB Port - 2.1 AMP
- 900 Joule energy rating provides superior power protection for all your sensitive mobile devices
- Wall-mountable for extra outlets without extra cords
- 360-degree rotating plug with 4 locking positions for a compact, lightweight design
- 2 powered USB Ports (1 AMP each)
- Damage-Resistant Housing protects circuits from fire, impact or rust, and prevents dents and scratches
Surge Protection Wherever You Go Add outlets and peace of mind on business trips and vacations with the Belkin 3-Outlet Mini Surge Protector. Plug it into any wall outlet for extra outlets without extra cords. The 360-degree swivel feature makes it easy to fit in small spaces. Two powered USB Ports offer convenient one-source charging for your mobile devices. Safeguard Your Devices Voltage fluctuations, surges and spikes can damage your computer and peripherals and degrade overall performance. Belkin's Wall Mount Surge Protector safeguards your personal computer, printer, hard drives, modems and other hard-to-replace equipment against damage, data loss, file corruption and system crashes. Powered USB ports are intended solely for charging devices. They cannot be used as a USB hub and they do not transmit data.
So, those travel/mini surge protectors can be used with USB-powered headphone amps. How about USB-powered dacs?
This is a very interesting thread.
Edited by JakeJack_2008 - 3/5/13 at 10:12am