View Larger Image Asus STX 2 7.1 channel sound card with V6 Vivid Opamp Fitted the V6 Vivid opamps to Asus STX 2 7.1 channel pcie sound card in a HTPC attached to 4 tube amps giving a full 7.1 channel tube surround sound. By Sales Burson|2017-10-30T10:11:13+11:00October 30th, 2017|V6 SS Opamp|Comments Off on Asus STX 2 7.1 channel sound card with V6 Vivid Opamp Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail