Tarik Bilgin paused, thought it over, and spoke thusly: >>USB Audio cards are 'Pro", the firewire thing is about hard drives >>and running hardware that connects to the Mac, also. Every major >>[i.e. 'pro'] recording, audio signal treatment application out >>there will use USB. You want a card that has 24/96 capability > >what's 24/96? 24 bit/ 96kHz resolution at the top end. A 'Pro' spec, in other words. > >>to take advantage of the Mac's [including, certainly, the >>Ti-Books], amazing built-in audio capabilities. > >actually flipper I've seen some audio boxes in the 1k to $10K market >that just use Firewire instead of USB, and combine some other pro >features like multiple inputs and output, mixing and gain controls >etc etc. These FireWire or USB boxes turn up on eBay all the time. There's a huge home recording market out there. A lot of the folks are just like us, they pick up the latest thing in quests for zero latency, multiple devices with as-close-to-simultaneous 'clocking', etc. So, the older boxes go on the market constantly. It is easy to find MOTU's 828 box for $100 or less, and it is sufficient to record Grammy-Award winning material, period. But, where semi-pro, and pro studios are concerned, the 'sky's the limit' in audio processing gear. Because we can get away with all-software solutions [with amazing results on G4 Macs], the only real 'hardware' needed is a single analog/digital line level converter to bring signal into the Mac. The rest can be done with Peak, or Spark, and a few VST plugins [for signal treatment. The semi-pro 'boxes' simply make it easier to import/export the material, and then, if one is using synthesis, higher level 'treatment', etc...MIDI becomes handy. Thus the proliferation of basic models with 2 in/out Audio, and 4 to 6 in/out MIDI. Things have come a long ways in ten years. A friend and i recorded and mastered an LP that was nominated for a Juno [Canadian grammy] on an old Trident console. But the real work was done by my old Mac SE, a pair of Scully reel-to-reel 8-track decks, a SMPTE time code generator, Vision software [for sequencing], a couple of Akai samplers, etc. Today, all of that can be done, internally, with affordable software, AND a simple in/out interface to the Mastering decks. Apple's own site is a good place to start when looking into what's possible with the Macintosh and Sound. http://www.apple.com/macosx/technologies/audio.html ~flipper