Is it worth it? Well, it really depends on what your current audio devices are. If you're looking for a simple portable upgrade over some cheap motherboard/ laptop dac. Sure, it could be worth it. For me, I don't think it was a major noticeable upgrade over my motherboard set in terms of sound, however, being a USB dac, it was able to solve the whiny noises that my motherboard dac picked up.
All I'll say is this, if you have a low end laptop/ motherboard setup, you want a USB dac for whatever reason, or your laptop/ motherboard setup pick up electronic frequencies from gpu/ mobo inductors, then this could be a simple fix.
However, if you have a good laptop/ motherboard solution, or you wanted more power then this won't work as it's only a USB dac amp and it'll only get the 5V from the USB ports.
Some have mentioned overheating issues, my unit only got warm. Occasionally, the audio will pop and go fuzzy, that's kinda rare like a few times a week, but that can be fixed by turning the knob to zero and on again. But yeah, that's all there is to it.