Yamaha, Stereo Equalizer, models:

EQ-1100	Owner'S Manual
EQ-500U	Owner'S Manual
EQ-550	Owner'S Manual
EQ-630	Owner'S Manual Service Manual
EQ-630RS	Owner'S Manual
GE-3	Owner'S Manual
GE-60	Owner'S Manual
GQ1031BII	Operating Manual
NE-1	(Japanese) Manual Manual Owner'S Manual
Q2031	Operation Manual
Q2031A	Operating Manual Operation Manual
YDP2006	Operating Manual