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INTRODUCTION
Thank you for purchasing a pair of PSB Speakers' M4U TW1 earphones. Producing natural musical dynamics and precisely
imaged sound, these high fidelity earphones bring you closer to the music you love.
Engineered with over 45 years of audio excellence and research, the M4U Headphones deliver unmatched sound quality
and all-day comfort for music enthusiasts and professionals. PSB's true-to-nature sound quality and stylish ergonomic
design allow you to escape to a personal concert experience that travels anywhere with you.
REGULATORY INFORMATION
Operating Temperature Range:
Operating Frequency Range:
Input Rating:
Battery Rating:
Battery Charging Time:
Weight:
Date of Manufacture: The first digit in the second part of the serial number indicates the year of manufacture; "7" is
2017.
Responsible Party: Lenbrook Industries Limited. 633 Granite Court, Pickering, Ontario, Canada L1W 3K1. Phone: (905)
831-6333, Facsimile: (905) 831-6936
The Bluetooth
word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use if such marks by
®
NAD Electronics is under license.
To prevent possible hearing damage, do not listen at high volume levels for long periods.
OSHA Guidelines for Noise Exposure Limits
The 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.
90dB
95dB
100dB
105dB
110dB
115dB
120dB
SAFETY INFORMATION
Please read this booklet to ensure that you are getting the most out of your PSB product and music.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device
may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operation.
5°C – 40°C
Bluetooth 2.4G
5VDC, 500mA
3.7V, 90mAh
2 hours
10 grams / each
8 hours
4 hours
2 hours
1 Hour
30 minutes
15 minutes
Avoid as damage may occur
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