I purchased this DAC/Amplifier with the expectation it would perform at least to the level of the Asus Essence STx it was replacing. The unit was purchased from amazon.com, and delivered relatively quickly. Box/Manual/Packaging were all very nicely done. Now to the meat of the review, my initial impression.    The unit felt pretty well constructed, with a decent heft, however the volume control is a cheap rubber knob id expect on something in the 30 dollar range, poor  decision audinst! This is not a cheap device, and the knob most used makes...

Great cans, Amazing SQ!