Phantom power into keyboard headphone jack
I'm wondering how I should connect my digital piano to my soundcard. I have a 3.5mm <-> XLR cable so I can connect it directly to the XLR port of the soundcard mixer. However, I'm wondering what will happen if I forget to turn the phantom power off on the sound card? Will I fry the digital keyboard by pushing 48V into the headphone jack? If not I'll go with the XLR solution. (I'm biased towards XLR-cables. Somehow they feel better and more professional.) If there is a risk of harming the keyboard I'll look for some other solution.