Hi QuadBob,
Thanks for your response. I do not know what the board number is (it's presently at the shop) All I know is that it is the tone board, with all the control knobs attached from a Sansui QRX 7001 manufactured in April 1976. If that is insufficient info I will have to get at the board.
I had filled out my personal profile but it was blank when I checked it just now. I have filled it out again. I have been a Sansui owner since 1968 but am brand new to Quad. I have decided on the 7001 from Sansui after reading many of yours and Hooded Crows input on these wonderful machines and am looking forward to getting my system sounding as good as I can afford.
Thanks much for your help!