Includes a power supply (Please choose US, EU/UK or AU plug-type below). The EU/UK and AU power adapters are rated for 220-240v at 50hz.
I bought one of these because the onboard headphone amp on my Realtek ALC 892 was kinda garbage when it came to driving my Sennheiser HD 518's. After buying this amplifier I can say even without the ODAC there is a noticeable improvement in sound quality, the sound is more textured and cleaner that the onboard headphone amp ever was and the build quality seems pretty good. The power output is also pretty ridiculous, turned up half way with the default gain setting is enough to drive my HD 518's well into distortion. Overall I'd recommend this product 100 times over for it's simple design and rock solid performance.