d&b audiotechnik E9 P1200 Amplifier Controller Card

This item is used but fully functional.

When used in a d&b audiotechnik P1200 amplifier, this card provides the proper settings and controls for up to (2) d&b E9 loudspeakers.  Two cards are needed to take advantage of each amplifier channel.

http://www.dbaudio.com/en/systems/category/series/detail/heritage/amplifiers/p1200a-mainframe.html