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INTRODUCTION
Thank you for purchasing a pair of PSB Speakers M4U 4 In-Ear Monitors, a highly developed set of dual-driver earphones that capture all the sounds from
your music collections and brings them into your personal space. Producing natural musical dynamics and precisely imaged sound, these high performance
earphones will bring you closer to the music you love.
The M4U 4 from PSB Speakers combines over four decades of audio research with true-to-nature sound quality and multi-function remote control
technology to deliver a personal music experience that will travel anywhere. PSB Speakers hopes you enjoy your purchase.
SAFETY INFORMATION
Occupational Safety Health Administration (OSHA) has issued headphone usage recommendations for maximum daily exposure and sound pressure levels
[measured in decibels (dB)]. A decibel is a unit of sound measurement that increases exponentially with volume. For example, conversational speech is
typically around 60dB, and a rock concert in a stadium is often about 110dB.
Volume Level
90dB
95dB
100dB
105dB
110dB
115dB
120dB
WARNING: I. Warnings or announcements may be unnoticed when you are using the headphones. You should be aware of ambient sounds while wearing
the headphones, and recognize them as needed. II. Long-term exposure to loud music may cause permanent hearing damage. III. Do not attempt to modify
this product as it could result in personal injury and/or product failure. IV. If water or other foreign substances permeate inside the device fire or electric
shock may result.
CONNECTING
Right Earphone
Selecting Headphone Cables
Recommended Listening
8 Hours
4 Hours
2 Hours
1 Hour
30 Minutes
15 Minutes
Avoid as damage may occur
Each earphone is colour marked to indicate the left (black/white) and right (red) side.
Left Earphone
In the package, two 1.2m detachable cables are included. One cable is a standard
straight cable for regular music listening. The second cable has a moulded ear loop,
remote controls for music playback and mobile phone control on iOS devices, and an
inline microphone for talking on the phone.
2
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