J.Rowland Is it possible to shut off the display

I have Jungson JA 88C (cost me all of $325 used) which uses the Rowland digital volume control. Try depressing and holding down (not a quick click) the mute button on the remote for a few seconds. This defeats the display on the Jungson (which also has no power switch on the front of the amp) which has no controls on the amp other than volume. Adjusting the volume on the amp or remote, or changing input on the remote will then re-activate the display.

Give it a try.

One other bit of info that may be of use. Holding down the mode/input button on the remote on the Jungson until the display flashes and then using the volume control on the remote will allow you to cycle up or down in volume much more quickly than in the "normal" mode. This is a very useful feature that I use quite a bit as adjusting volume in the default mode is pretty slow.