BOSE(R) 321 GS Series II DVD Home Entertainment System - Silver Two speakers (instead of five) and a hideaway Acoustimass module - deliver much of the home theater experience that other systems use five speakers to create The 3?2?1 GS Series II system?s speakers are half the size of our original 3?2?1 system, and blend easily into your room Simple to set up, simple to use - with just 3 wires and 2 visible speakers (and a hideaway Acoustimass module) this 1 easy system incorporatesa setup disc that helps you through a step-by-step installation process TrueSpace surround digital processing circuitry Bose Videostage 5 decoding circuitry delivers a home theater experience from almost any source. CDs, VHS tapes, and even mono TV programs,that weren?t recorded in surround sound