关于creative声卡的请教效地想买个声卡，目前索订几款 CREATIVE SoundBlaster Audigy (24-bit) ES 5.1 =Box= CREATIVE SoundBlaster Audigy (24-bit) DE =Retail Box= CREATIVE SoundBlaster Audigy (24-bit) =OEM Pack= CREATIVE SoundBlaster Audigy2 (24-bit) =OEM Pack= CREATIVE Live Value Digital 有几个问题请教一下，=Box=, =Retail Box=， =OEM Pack= 有什么区别？ Audigy 和 Audigy2区别在哪里？价格差多少？ Creative Live Value Digital为什么那么便宜？ 有5.1的吗？ 它不是用 Dolby Digital而是用AC3的，效果差多少？ 另外还想找个好点的5.1的Digital Speaker陪这个，看了几款Altec和Creative的，价格好像是Altec的便宜一点，那个性价比好一些？ 多谢指点！

AC3和dolby digital是一回事dolby surround = stereo front + mono surround dolby pro logic / II = stereo front + mono surround + center dolby digital / DTS = stereo front + stereo surround + center + woofer dolby digital surround EX / DTS EX MATRIX 6.1 = stereo front + stereo surround + center + "matrixed surround center" + woofer