Optimus, Microphone, models:

2694M	Instruction Manual
33-3016	User Manual
B-F50XS	Instruction Manual
CX-504	Instruction Manual
DC-600ETH	Operating Instructions Manual
MD-20	Operating Instructions Manual
MD-30C	Operating Instructions Manual
ME-F45D	Instruction Manual
ME-PS1	Quick Manual
ME-PS2	Quick Manual
MH-850C	Instruction Manual
PHM-902	Instruction Manual
PT-850BC	Instruction Manual
PT-850BC + CM-804i	Instruction Manual
Unidirectional Condenser Microphone	User Manual