---
title: kMIDIPropertyMaxTransmitChannels
framework: coremidi
role: symbol
role_heading: Global Variable
path: coremidi/kmidipropertymaxtransmitchannels
---

# kMIDIPropertyMaxTransmitChannels

The maximum number of MIDI channels on which a device may simultaneously transmit channel messages.

## Declaration

```swift
let kMIDIPropertyMaxTransmitChannels: CFString
```

## Discussion

Discussion Common values are 0, 1, and 16.

## See Also

### Channels

- [kMIDIPropertyReceiveChannels](coremidi/kmidipropertyreceivechannels.md)
- [kMIDIPropertyTransmitChannels](coremidi/kmidipropertytransmitchannels.md)
- [kMIDIPropertyMaxReceiveChannels](coremidi/kmidipropertymaxreceivechannels.md)