Here is a tiny gadget that generates phantom power from iOS devices, allowing you to use a condenser microphone with your handheld device. You will be able to also attach your musical instrument and record directly into GarageBand, Cubasis, and other music making apps. The illuminated gain halo helps you find the right level faster.
Focusrite’s iTrack One Pre plugs straight into your favorite iOS device and lets you easily record anywhere. Costs under $130 at this time.