http://cgi.ebay.com/3-5mm-1-8-6-3mm-1-4-Stereo-Headphone-Adapter-/190503997358?pt=LH_DefaultDomain_0&hash=item2c5aec4fae
Is that the correct adapter for the 360s to fit in the Xonar STX?
Is that the correct adapter for the 360s to fit in the Xonar STX?