I have used it as a headphone amp connected to my computer and it works very well. The headphone amp is powerful and makes all my ears louder than I want to hear. HOWEVER I don't have anything extremely difficult to handle. An unexpected benefit is how good my bookshelf speakers sound. Connected to the RCA outputs I have an SMSL SA-50 powering a pair of Micca MB42X. The combination of SA-50 and MB42X used to be good but a bit bass heavy, but after installing the SD793II the sound is much more balanced. The bass is there, but tighter and less sloppy, creating a more balanced and enjoyable sound. This may be because I don't use my computer's DAC now, but I've also noticed combo bass when I connected it to a Bluetooth receiver. Overall, this is one of the best additions to my audio system at the moment. For the price it's great and works as part of a speaker setup or as a headphone amp coming off a desktop computer. I will update later if anything changes.
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