YAMAHA Kuuloke EPH-R52 In-Ear Silver Mic

Focussing on audio quality for tight, well-defined bass and crystal-clear highs

The housing of the EPH-52 Series has been designed with the driver and sound duct in a linear arrangement so that the sound from the driver is delivered directly to the eardrum. Materials with differing levels of hardness—ABS (acrylonitrile butadiene styrene) for the front section and polycarbonate ABS for the rear section—have been employed in order to reduce unwanted resonances, which cause muddiness. For precise audio reproduction, Yamaha equipped the series with high-grade earphones, finished the outside of the driver unit with a manganese alloy that ensures excellent damping performance, and designed the housing itself to control vibrations. Moreover, a sound-tuning pipe that controls unnecessary peaks in the high frequency register is built in to the unit. This keeps the bass sounding taut, which makes for a more pleasurable listening experience, and reproduces the high register with exceptional clarity so that all of nuances of the musical instruments can be heard clearly.

Manganese damping alloy keeps unwanted vibrations under control

The EPH-52 Series makes use of a special alloy primarily comprised of manganese. The alloy itself absorbs vibrations, and keeps the vibration absorption of a broad range of frequencies under control. Since it is a non-magnetic material, it has no effect on the driver magnet and effectively improves vibration damping performance.

Specially designed 8mm (3/8”) driver and diaphragm shaped with a high-precision tangential edge

Yamaha’s newly developed driver unit contains a highly magnetic neodymium magnet. Moreover, the diaphragm is designed with a high-precision tangential edge, and the shape of the edge and surface area of the domed vibrating section are set up to ensure optimal movement of the diaphragm according to the volume level during playback. This allows for compact earphones that can reproduce a wide frequency spectrum while delivering a powerful sound.

Serrated ear buds with superb fit and high sound quality

The ear buds are made of two types of silicon material—one hard and one soft. The sound passage section that uses hard silicon combines flexibility and strength through serration. It retains its shape even when inserted into the ears and fits perfectly to the shape of the ear canal. In addition to creating a comfortable fit, the ear bud also prevents deterioration of sound quality due to sound leakage.

Compact housings equipped with acoustic port that enable rich and clear bass reproduction

The housing design also optimizes flow resistance in the operation of the diaphragm due to the acoustic port, which functions as a vent. The housing enables precise, rounded bass reproduction.