TASCAM Series 208i USB Audio Interface Features: Rugged, sleek metal design makes this a durable interface for recording anywhere 4 Ultra-HDDA microphone preamplifiers with individual gain knobs Combo inputs accept line- or instrument-level signals for recording keyboards, guitar, bass, and more Up to 24-bit/192kHz operation provides superior studio-quality recordings Dual optical inputs (with SMUX) support up to 16 additional input channels DSP input/output mixer for routing signals, controlled via free TASCAM Control software Built-in effects include reverb, compression, and 4-band EQ Headphone outputs with individual volume control provide zero-latency monitoring while you record Includes Steinberg DAW software, IK Multimedia AmpliTube guitar amplifier modeling software, IK Multimedia T-RackS mastering suite, and iZotope Neutron Elements