| ADAT | Optical multichannel digital-audio format. iD14 MKII supports up to eight ADAT input channels at 44.1/48 kHz and four channels using SMUX at 88.2/96 kHz. |
| ADC | Analogue-to-digital converter. Converts an analogue audio signal into digital audio. |
| Buffer size | Amount of audio data processed in each block by the computer. Lower values reduce software-monitoring latency but increase processor demand. |
| Clock source | Device or signal used as the timing reference for digital audio. |
| Cue mix | Independent monitoring mix that can use different channel levels and routing from the main mix. iD14 MKII provides Cue A and Cue B. |
| DAC | Digital-to-analogue converter. Converts digital audio into an analogue signal for outputs such as speakers or headphones. |
| DAW | Digital Audio Workstation. Software used to record, edit, mix, and play audio. |
| dB | Decibel. A unit used to express the ratio between two signal levels. |
| dBFS | Decibels relative to digital full scale. 0 dBFS is the maximum representable digital level. |
| dBu | Audio voltage level referenced to 0.775 V RMS. |
| DI | Instrument input intended for direct connection of sources such as electric guitar or bass. |
| DSP | Digital signal processing. |
| I/O | Input/output. |
| JFET | Junction field-effect transistor. A transistor type used in the iD14 MKII instrument-input stage. |
| Latency | Delay between an audio signal entering a system and the corresponding audio being heard or returned. |
| LED | Light-emitting diode. |
| Loopback | Routing audio from the computer or iD Mixer back into a recording or streaming application as an input. |
| Phantom power | DC power supplied through a microphone connection for microphones or equipment that require it. |
| Polarity reverse | Inverts the polarity of an audio signal. |
| Sample rate | Number of audio samples processed per second, normally expressed in kHz. |
| ScrollControl | Audient control mode that allows the hardware encoder to operate like a computer scroll wheel with compatible software controls. |
| S/PDIF | Two-channel digital-audio format. iD14 MKII supports optical S/PDIF input at sample rates up to 96 kHz. |
| SMUX | Method of carrying higher-sample-rate audio over ADAT by using multiple optical channels for each audio channel. |
| THD+N | Total harmonic distortion plus noise. |
| TRS | Tip-Ring-Sleeve connector. Depending on the connection, it may carry balanced mono audio or stereo audio. |
| TS | Tip-Sleeve connector commonly used for an unbalanced mono signal such as an instrument connection. |
| USB | Universal Serial Bus. |
| XLR | Three-pin connector commonly used for balanced microphone-level audio connections. |