TD-7: Using Acoustic Triggers with the TD-7
The TD-7 was designed to be played with Roland single or dual trigger pads, so
the output level of acoustic triggers may not correct. To improve trigger
response, the Roland manufactured the optional AT-4 Acoustic Trigger Interface.
The AT-4 had four inputs/outputs as well as an attenuator for each pair to
adjust the acoustic trigger signal.
The AT-4 is no longer available from Roland.