SPEC RSR-11 Remote Control for Amplifier
Connect the remote control receiver to the terminal on the rear of the amplifier and operate it using the remote control unit. The volume can be adjusted up in 4 steps and down in 7 steps, approximately ±10dB, relative to the volume set on the amplifier itself. The attenuation button also allows you to instantly reduce the volume by -20dB to -30dB.