Per Lindhof wrote:Hi Guitarrista
I connect my laptop with a mini jack through the headset out/in.
I just tried to go on Soundcloud on my wifes HTC smart phone via the headset connection too. The result was a lot better and hard to differ from the Hi-Fi cd-player at all.
Maybe my computer is poor??
Yes, minijack means the computer's D/A converter (part of your computer soundcard if you have one, or part of the motherboard) is the one doing the conversion. The headphone minijack out is an analog medium for sound - unlike HDMI for example.
Look at all the outputs you have on your computer - if, apart from USB, all of them are analog (no HDMI, for example), then you can't really avoid the computer D/A when playing audio from your computer. (or maybe you can - through usb but you need other software and hardware and it's hard to guess without knowing specifics of the computer and hifi system)
So yes, it sounds like your wife's HTC phone has a better D/A converter
Maybe you can tell us the exact make and model of your computer and of the hifi system/components - then looking up the specs should make it clear quickly if there is a way to send a digital audio signal to the hifi.