Headphones User's Manual
IE Professional Reference Earphones 
|
 User Guide 
|
 11
 English
Troubleshooting
<   Diminished Sound Over Time
If you experience lower performance over time, use the cleaning tool to make certain that the 
ear conductor is unobstructed.
< No Sound
If you are not receiving any sound, make certain that the jack is properly attached to your 
listening device and that the volume has been gradually increased. If you are still not receiving 
sound, confirm that the connections between the cable and your earphones are secure.
If the suggestions listed above do not solve your problem, please contact one of our customer 
service representatives.
Product Specifications
Specification IE-10 IE-20 XB IE-30 IE-40
Speaker Type Precision 
balanced 
armature
Precision 
balanced 
armature and 
dynamic driver
Two precision 
balanced 
armatures
Three 
precision 
balanced 
armatures
Input Sensitivity 115d B /mW 119dB/mW 119dB/mW 117d B /mW
Impedance 13 ohms 
(@1kHz)
11 ohms 
(@ 1kHz)
21 ohms 
(@ 1kHz)
32 ohms
Cable Length 46 inches 46 inches 46 inches 46 inches
Complete Assembly Weight .5 oz .7 oz .6 oz .6 oz
Input Connector 1/8” (3.5mm) 
gold plated
1/8” (3.5mm) 
gold plated
1/8” (3.5mm) 
gold plated
1/8” (3.5mm) 
gold plated
Noise Isolation 26dB 16dB 26dB 26dB










