The headphone out of modern laptop is more than good enough for live gigging. One thing though, running it while plugged in with an AC power cable will cause weird noises through your PA and that will be your first question here after the gig. You need to either use a two prong adapter to lift the ground or run it off the battery.

The second suggestion is to use a stereo break out adapter so you can run the bass and drums to one channel and the rest of the instruments to another channel. The overall mix will sound vastly different out on a gig than it does at home. One gig I did in a medium sized bar the bass was just booming and I could turn it down that way. It's the bass and drums that causes the most trouble so that was my solution to have separate control over them. That can change as the gig goes on too. Early there may be only a few people but later the place is packed and you need to turn the bass and drums back up. Yes you can control that live using Biab's mixer but that's tricky to do while you're playing. Then when you stop that song and move on to the next one the mix can be different. You'll soon realize that what you set up at home as far as balancing between the instrument tracks is pretty much useless on the gig because of different acoustics.

To get back to an interface, there was a former user here named Silvertones who had an elaborate live setup using an 8 channel expensive interface that could breakout each instrument to it's own track. That gave him full control of the entire mix because he also had an 8 channel PA. He used Real Band rather than Biab for this because of more available tracks.

Bob

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