Yes, you can! SSL 1 is compatible with mobile devices (phones and tablets) supporting USB Audio Class 2.0 (UAC2).
If you want to use your SSL 1 with a mobile device, power by connecting a 5V power source (such as a phone charger or power bank) to the '5V EXT' port. Then use the regular 'USB' port on the SSL 1 to connect to your device.