When considering what audio interface to purchase for looping, one way to break it down is by whether you’ll just be jamming by yourself at home or if you’ll be performing. Another consideration is how many instruments you’ll be looping.
Guitar Looping at Home (or single instrument looping: keyboard, violin, vocal, bass, etc..)
If you’re just doing guitar looping by yourself at home, something like a Focusrite 2i4 will get the job done nicely. I’ve had on of these for maybe 8 years now and it has held up very well and I’ve been happy with the sound quality. With two, single line inputs, you can plug in:
- A guitar and a mic
- A guitar and a bass
- Stereo outputs from a keyboard
- An acoustic guitar and a violin mic
You get the idea. Two inputs. The Focusrite 2i4 will also work for solo performance situations. For example, it would work well for a singer / songwriter with an acoustic and and a vocal mic.
The Focusrite has a headphone jack, two line outs as well as RCA outs – for plugging into your stereo for example.
Multi instrument looping requires a sound card that has 2,4,6 or 8 inputs.