BUT - I could not believe it - it really is that, as already reported that after a short time listening to music my (cheap) in-ear earphone very warm (!)! I use it mainly yes on the LCD monitor with active boxes and would have probably never been tested, and if noticed another reviewer would not have described. So I'll take that into account and keep him - but is not normal. I have one at least outwardly seemingly identical "BIGtec USB sound card 7.1" and thought, these things are all the same, but the latter has not definitely these Macke. I take time off (only) 2 stars, because it is indeed supported at least by the chipset easily from Android / Linux, in my case, only boxes must control and very cheap but really I can not recommend him.
Supplement (17:01.): I once even given him a chance with another (only approve) of headphones and made a direct comparison with the BIGtec USB DAC and the "Daffodil" drops significantly. If the KH next to the warming of the Sound compared was also significantly worse than with the other DAC. He apparently really can not cope with various KH-impedances and is probably more of a risk for KH. Although the product description "Loudspeaker connection" says the icon on the device is a headset - so you should expect it to work without problems also with KHS. I pull another star from and he wanders into a drawer for "emergencies".