Korg nanoKONTROL2 Slim-Line USB Control Surface, Black

A knob, fader, and three switches are provided for each of the eight channels, respectively assigned to pan, volume, and solo/mute/record.

This arrangement is a real convenience when recording automation for multiple channels.

There's also a marker button, making it easy to assign marks at important points in your song for more efficient recording and song production.