The control knob incorporates over 500 steps per revolution and a modifier mode can be used with the buttons to allow mapping of two functions to each. Mapping software is included for custom assignment of key commands and MIDI messages for use with audio and media applications. In addition to functioning as an audio interface, the Kontrol 1 includes three buttons and a control knob on the top panel for use as a controller. Native Instruments Audio Kontrol 1 audio interface and MIDI controller. The top panel of the interface provides activity LEDs for inputs, output, and monitoring, with a clip display feature. Direct monitoring is also possible through front panel controls. A headphone output with A/B switching and separate level control is easily accessible on the front panel.

Two stereo-level controls are available for the audio outputs. jack connections and MIDI input/output ports are located on the rear panel. Individual gain controls for the inputs are also located on the front panel. The other input is switchable between a line and Hi-Z input for recording instruments. The first of these is a switchable line/microphone with phantom power supply. Two balanced inputs are available on the front panel. High-quality Cirrus Logic analog-to-digital (A/D)/digital-to-analog (D/A) converters provide sampling rates of 192 kHz/24 bits and a signal-to-noise ratio of 103 dB (A-weighted).

The unit has a sturdy aluminum casing and is USB-powered for portability (see Figure 1). The Audio Kontrol 1 from Native Instruments is both an audio interface and a MIDI controller. Native Instruments Audio Kontrol 1 Audio Interface and MIDI Controller

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