Works well enough for enthusiasts, but may not be up to the standards of audiophiles. I use it for a Tascam TM-80, an Arturia Microbrute, and my headphones. The build quality is above what I expected. Being powered by a USB-Bus is convenient, but causes a faint hissing sound that is really only audible when the volume is maxed out. My unit (which may have been falsely listed as New) had scuff marks on the glossy front. If it was new, your unit may have cosmetic defects from the manufacturer