DTS Connect is the latest thing from DTS that turns your PC into an action-packed entertainment experience that surrounds you in sound. Make your movies, music and games come alive in exciting, dynamic, multi-channel DTS Digital Surround. World's first DTSA? Connect logo program certificated PCI audio board DTS Interactive - A real-time 5.1 encoder that takes any 2 or more channel and encodes it into DTS bit stream. DTS Interactive provides a single cable connection via S/PDIF digital audio output to a DTSA® enabled surround sound system by encoding all audio into a DTS compatible bit stream at 1.5Mbps DTS Neo - PC - An up mixing matrix technology that turns any 2 channel audio into 7.1 surround sound. DTS Neo - PC, based upon DTS Neo - 6 matrix surround technology, transforms any stereo content such as MP3, WMA or CD audio, into a 7.1-channel surround sound experience Dolby Digital Live(DDL) Real-Time Content Encoder converts PC audio into a 5.1 channel Dolby Digital bit stream Swappable dual DIP type OPAMP controlled preamp circuit (4pcs output control OPAMP IC with DIY socket, 2pcs MIC input control OPAMP IC with DIY socket) Max 2.8Vrms full swing analog output gain by unique preamp circuit / incredible powerful analog output, improve dynamic range / SNR Proper OPAMP control