[spab]

Placette Audio volume control. This is the standard RVC model which accepts a single source. The one caveat is that I don't have a remote volume control for the unit. However, I don't think they are difficult to acquire from Placette Audio. 
$400 + shipping from 63141

[spab]

Never had a remote with it.

[tfoust]

Does anyone have a manual or these units?  I bought one recently and like it but I don't understand the LED display for the volume setting.  Would like to read how it is to be read.

[mix4fix]

Do we have photos, and a link?

[guls]

Does this help?

https://web.archive.org/web/20230924003920/http://www.placetteaudio.com/passive-guide.htm

To operate, plug the power supply into the rear of the unit and then attach interconnects. The switch on the front panel allows the user to raise and lower the volume level without the remote control. The LED display shows the relative volume as a binary number output of 0 to 125. The red LED comes on as the volume control is half-way up or at step 64. This red LED is only a warning that the power amplifier outputs could be very high and is not in any way an indication of reduced sound quality.

You can also use the remote transmitter to raise or lower the volume. It steps slowly for a few steps and then speeds up as the control button is held down. Programming instructions are included to allow the user to control the CD, VCR, TV or other source functions with the remote.

[tfoust]

You are a prince and a scholar!  Thank you!
I'll have to study the remark about the binary number output.  I don't understand that yet but this is more than I had.