LaCie FastCoder High-quality, real-time encoding on G3, G4 and G5 Macs with built-in FireWire ports FireWire Interface (also provides power) Audio Bit Rate for MPEG-1 and MPEG-2 - 128, 160, 192, 224, 256, and 384kb/s Sampling Frequency - 32 and 48kHz for MPEG-1 &amp; MPEG-2; also supports DV 32kHz &gt; MPEG 48kHz, DV 48kHz &gt; MPEG 48kHz combinations System Bit Rate - 1 to 5Mbits/s for MPEG-1(CBR), 2 to 10Mbits/s(CBR), or 4 to 6Mbits/s(VBR) for MPEG-2