
Please follow the instructions in this manual to obtain the optimum results from this unit. 
We also recommend that you keep this manual handy for future reference.
YP-M301HEADSET MICROPHONE
INSTRUCTION MANUAL
133-05-309-0A
Type  Electret condenser type 
Directivity Unidirectional 
Sensitivity –41 dB (0 dB=1 V/Pa, 
1 kHz, load: 2 kΩ)
Maximum Input Sound 117 dB SPL 
Pressure
Terminal  ø3.5 mm monaural plug 
Cord Length 1.2 m 
Finish Headband: ABS resin, 
black
Weight 45 g (cable included)
4. SPECIFICATIONS1. GENERAL DESCRIPTION
The YP-M301 is a headset microphone designed to 
be exclusively used with an optional WM-1100 
Portable Transmitter.
3. HOW TO USE
• Put on the headset and adjust the slide arms so 
that the head pads are positioned just over the 
ears. 
• Adjust a microphone boom, and position the 
microphone (windscreen attached) at the mouth. 
• Keep the microphone 3 – 5 cm away from the 
mouth when using. 
• Speaking loud or positioning the microphone too 
close to the mouth could muffle sounds and make 
them inaudible.
• The headset is not recommended for use in 
aerobics or other vigorous performance 
applications.
• Use the supplied case when storing the unit. 
2. NOMENCLATURE
Note: The design and specifications are subject to
change without notice for improvement.
Storage case .............................................. 1
Windscreen (black) .................................... 2
• Accessory
Headband
Head pad
Slide arm
Microphone boom
Angle adjustable (360°)
3.5 mm-diameter monaural plug
Microphone
Windscreen
Maximum 60 mm