Nikos,
I'm new to SunSDR2 DX, however, when i purchased the radio, i was using a RadioSport RS60CF headset, only because it was that or my Heil Pro 7 headset or my Yaesu MD-200a8x. I found that I wasn't gettng the audio that i wanted from two headsets, so i tried the Yaesu, but it also didn't work well. On a whim, i tried my $25 Walmart Logitech H390 gaming headset and found that it sounded wonderful. Instead of connecting it to the radio, this headset connected to my computer via USB. I was quite happy with it, but noticed that the frequency response from the microphone wasn't all that great. I went on a search for a USB podcaster microphone and ran into the Blue Yeti X. This is a professional podcaster USB microphone and OH MY does it sound awesome! I have had it for about 3 weeks and i get nothing but great compliments on the sound.
If you're unsure what to try, give either of these 2 USB microphones a try.. you'll be pleasantly surprised of how good the audio quality is!!
7 3 de,
O.C. - NG7E