Back in Hamburg I used a Focusrite Saffire Pro 40, a rack-unit-sized interface with 20 in- and 20 outputs, to do recordings and to go on stage with Thank You George. Bringing this massive device on the trip was obviously not an option. So I needed a new recording interface that was much lighter and smaller. If you find yourself in a similar situation you needn't worry. There are a whole bunch of interfaces out there that provide the quality and flexibility you need. When I was looking at the different options I was mostly concerned about the price, the size and the weight of the items while our producer Toby pushed for a high-quality interface. I finally decided to go for the 2nd generation of the Apogee One for iPad and Mac. The integrated microphone eliminated the need for carrying an additional microphone for vocal recordings and the overall audio quality was said to be excellent. For more details on the device, please turn to the Apogee website.
Update (15 May 2016): I have completed the first recording sessions using the device's microphone to capture guitar and vocals. The quality of the Apogee One is indeed excellent. First of all, it's insanely easy to use. Just one knob and a few flickering lights and you're good to go. When listening to your first recordings you will find that the untrained ear will probably not hear the difference between a high end studio microphone and the Apogee One's built-in microphone. On the downside the sensitivity of the microphone leads to capturing an amount of ambient noise which, under normal circumstances, would call for moving any recording sessions into a properly isolated studio room. So far finding appropriate facilities while traveling has turned out to be close to impossible. While this is not an issue for capturing ideas and making song layouts, it might make it difficult to use the recordings in an actual production. If nothing else works I might have to re-record my vocal- and guitar tracks once I find a decent recording environment. Hopefully this won't have to wait until I am back in Germany…
Update (23 May 2016): During the ten days I have spent in Iran I have come across multiple situations in which I could have recorded local singers and musicians. In these moments time was of the essence and setting up my Apogee One with my Laptop would have taken too long (apart from the fact that carrying the laptop with me at all times would have been both, a major inconvenience as well as a security issue). Unfortunately the Apogee One does not have a build-in hard drive or a slot for SD cards which makes the device pretty much useless in these situations. Sometimes I feel that I should have gotten a different interface. Small enough to have it on me at all times and equipped with an onboard or exchangeable hard drive to press record and be ready to go. However, the Apogee One is doing a more than solid job when recording in a more or less controllable environment. Therefore I am happy to stick with it for now and use my Olympus OMD-E-M10 digital camera to spontaneously capture sounds and music along with HD videos.