The TD-27 supports 28 channel audio and MIDI to the computer via its USB port. For this functionality, the TD-27 drivers must installed in your computer, and the USB Mode in the TD-27 must be set to "VENDOR" from its default - (which is "GENERIC"). Here are steps and information for proper setup:
First, download and install the appropriate USB drivers. For Mac OS and Windows 8.1, drivers can be found on the TD-27 downloads page here: https://www.roland.com/us/products/td-27/downloads/
Installation instructions are included within the download.
*** Take note of the Mac OS troubleshooting informational link on each downloads page, as OS 10.13 thru current OS will block the installation of drivers in the background. You must "approve" that the drivers can be installed in the Security and Privacy section in your Mac.
For Windows 10, drivers will be downloaded and installed automatically once you have changed the TD-27's USB Mode to Vendor, connect the TD-27 via USB to your PC, and have an internet connection established. (Note - there is no physical driver file to download for Windows 10).
Here's how to set the TD-27's USB Mode to "VENDOR."
- Press the SYSTEM button.
- Cursor to highlight "USB AUDIO," and then press ENTER.
- Cursor down to highlight "GENERIC."
- Turn the main dial clockwise to choose "VENDOR."
- A USB Driver message prompts in the TD-27's display stating that the new change will not become effective until the TD-27 is powered off and on again. Press ENTER to select "OK" for this message. - Use the power switch on the TD-27 to turn off the power, and then power back on again.
After installing the drivers and switching the TD-27's USB Mode to Vendor, connect the USB port on the TD-27 to your computer, then select it as an audio and/or MIDI device within your software.
Below is a list of the audio routing for the 28 channels:
Channels 1-2 = MASTER OUTS L/R
Ch 3-4 = DIRECT OUTS 1-2
Ch 5-6 = KICK
Ch 7-8 = SNARE
Ch 9-10 = TOM 1
Ch 11-12 = TOM 2
Ch 13-14 = TOM 3
Ch 15-16 = HIHAT
Ch 17-18 = CRASH 1
Ch 19-20 = CRASH 2
Ch 21-22 = RIDE
Ch 23-24 = AUX 1
Ch 25-26 = AUX 2
Ch 27-28 = AUX 3