Monoprice Monolith Desktop Balanced Headphone Amplifier and ESS SABRE DAC with THX AAA Technology, Dirac Virtuo, MQA, Compatible with All Headphones and IEMS

It is a nice device, but it is deficient in several different areas (in my opinion). Fortunately, the sound and build quality is not among them. I use the device to send output to a set of active speakers and (every so often) to headphones. Here are my main complains: 1. Documentation. The only thing I can say that it sucks or non-existent. While it is not *that* difficult to figure it out, it should not be the case at all! 2. User interface. I know it may be asking for a lot, but it would be nice to have a web interface or a mobile/computer application to do all of the settings. This would save me a lot of frustration while getting the device set-up to sound and work as I wanted. Otherwise, I have nothing to complain about. Noise level is pretty low, and sound is good. I guess, for the money, you will be hard pressed to get something better!