The Apollo Twin audio interface, featuring a Duo Core processor, offers a wide range of connectivity options and high-quality sound. - Model: Apollo Twin - Core Count: DUO CORE - Connectivity: Optical input, line outputs, microphone inputs (2) - Control Knob: Large volume adjustment knob - Power: External power connection - Bottom Design: Perforated design for ventilation Used a few times after purchase. In good condition, but without box or accessories.