Yamaha Model E1010 Analog Delay, Vintage Rack
Front and Rear Inputs and Outputs.10-300 m sec Delay Short and Long,Feedback,Mixing, Equalizer and Frequency Modulation with Depth. w/ Foot Switch plug in
Made in Japan
http://www2.yamaha.co.jp/manual/pdf/pa/english/signal/E1010E.pdf
Unit is Tested and Functions Well
1979 - 1982 era