Thank you for your enquiry. The UD-BT01 enables the transmission of MIDI data between compatible MIDI devices (eg a Yamaha USB-to-Host equipped keyboard and a MacBook, Mac Pro, iPad, iPhone or iPod Touch, running current or recent operating systems).
MIDI data is purely information that can describe music, and/or instructions that can modify the settings or firmware of a device. For instance, MIDI enables you to:
- Send signals in real-time about the notes you’re playing on a keyboard to a virtual instrument on an iPad, making the virtual instrument play the same notes but using its own sound
- Change the voice/patch/program number of a synthesizer
Crucially however, MIDI data doesn’t include any audio - there’s no sound transmitted. Therefore, a MIDI connection (wired or Bluetooth) won’t be suitable for connecting speakers to your MacBook or iPhone.
There are a variety of Bluetooth speaker systems available - our own MusicCast speakers (such as the WX-030) support Bluetooth streaming and can be used with your MacBook or iPhone. However, be aware that due to latency and the possibility of interference or audio compression, studio monitor speakers (as of March 2018) generally don’t use Bluetooth connections – hence our HS and MSP Series Monitors use standard balanced cable connections.