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Introduction
Congratulations! You are now the proud owner of a pair of truly portable closed‐
back planar magnetic headphones.
The OPPO PM‐3 utilizes a planar magnetic driver that is developed from the driver
in our EISA award‐winning PM‐1 headphones. Technological breakthroughs
achieved during the PM‐1's development, such as the 7‐layer double‐side voice
coil diaphragm design and FEM‐optimized neodymium magnet system, have
enabled OPPO to reduce the weight of the planar magnetic drivers while
maintaining excellent sound quality and high sensitivity. The PM‐3 driver's smaller
size and high sensitivity make it especially suitable for portable use, and this
driver would not have been possible without the breakthroughs achieved in the
PM‐1's driver design.
In the PM‐3's planar magnetic driver, sound is generated by a very thin and light
diaphragm which is driven in a symmetric pull‐push manner, and the magnetic
system and conductor patterns have been optimized for maximum sensitivity and
consistency. This allows the diaphragm to generate very stable and linear piston‐
like vibrations, ensuring phase coherence and high resolution performance with
minimal distortion. Featuring a light weight closed back design and easily driven
with any smartphone or portable music player, the PM‐3 headphones will enable
you to enjoy your favorite music anywhere while being isolated from outside
noise.
We are proud of the work we have put into these headphones, and we hope they
bring you years of enjoyment.
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