Yamaha DTR2 Owner's Manual page 12

Connecting the remote control transmitter
By connecting the remote control cable to the REMOTE jack on the rear panel, this unit can be operated with the remote
control transmitter.
NOTES:
Do not strike or drop the remote control transmitter.
Also, do not get the remote control transmitter wet or
place it in a humid location.
Connecting headphones
Connecting the AC power cord
12
Do not connect this remote control transmitter to other
equipment.
Connect only the supplied remote control transmitter to
the REMOTE jack.
For best results, use 8-ohm to 32-ohm headphones with a
standard stereo headphone plug 1/4" (6.3 mm).
The headphone volume can be adjusted with the PHONES
LEVEL control.
After connecting all equipment, connect the AC power cord
plug to an AC wall outlet.