---
title: kMIDIPropertyIsEffectUnit
framework: coremidi
role: symbol
role_heading: Global Variable
path: coremidi/kmidipropertyiseffectunit
---

# kMIDIPropertyIsEffectUnit

A Boolean value that indicates whether the device or entity primarily acts as a MIDI-controlled audio effect.

## Declaration

```swift
let kMIDIPropertyIsEffectUnit: CFString
```

## See Also

### Roles

- [kMIDIPropertyIsMixer](coremidi/kmidipropertyismixer.md)
- [kMIDIPropertyIsSampler](coremidi/kmidipropertyissampler.md)
- [kMIDIPropertyIsDrumMachine](coremidi/kmidipropertyisdrummachine.md)