Andover Audio Introduces

EA-09

Planar Magnetic Headphones

MEET THE EA009 SERIES

Authentic Sound with Planar Diaphragm Driver

At the heart of our headphones lies a meticulously engineered planar magnetic driver. This advanced technology ensures unparalleled phase coherency and an ultra-fast transient response, reproducing music with breathtaking realism, accuracy, and detail.

EA-009 Planar Magnetic Headphones

The EA-009represents a breakthrough in planar magnetic headphone design, engineered for the discerning audiophile. At its core is a large φ75mm planar diaphragm driver, setting a new standard for audio reproduction and performance.

Wood Housing

It is black walnut wood housing for the P-II headphone. The entire wood production consumes a lot6of time and manpower.

The processes are:-Wood selection – CNC machining – polishing – 1st painting – drying – polishing – 2nd painting -drying – polishing – 3rd painting -polishing – drying -fix details.

A high-performance headphone with excellent technical capabilities

This chart displays the frequency response of the left (blue) and right (green) channels of the planar magnetic headphones, measuring sound pressure level (SPL) in decibels (dB) across the audible spectrum from 10 Hz to 40 kHz.

Impedance Characteristics

The impedance curve shows the headphone is very stable and easy to drive. Below 20 Hz there’s a big rise caused by the driver’s natural resonance, but since it’s below the audible range it doesn’t affect music. From bass through treble the impedance stays nearly flat at a few dozen ohms, with only a tiny rise at very high frequencies. This flat, resistive profile is typical of planar headphones and means they work consistently with most amplifiers.

Measured frequency response (SPL vs. frequency) for the left (blue) and right (green) channels of the headphone. The overall frequency response is reasonably balanced and extended, with each part of the spectrum showing specific tuning characteristics. Channel matching is excellent: the left and right traces overlap almost entirely across frequencies, indicating only minute level differences (on the order of 1–2 dB or less) at a few points. Such tight matching speaks to good quality control; it is crucial for stable stereo imaging and an accurate soundstage

Frequency Response Performance

Patented Vibration Suppression Technology

This patented, non-linear vibration suppression technology allows the driver to extend its frequency response, ensuring flawless sonic clarity.

Exclusive Dual-Magnetic Planar Technology

Acoustic Transparency: The magnets are engineered to be acoustically transparent, effectively "disappearing" before the sound waves. This design significantly reduces adverse effects and interference.

Unimpeded Sound Passage: The unique shape and density of the stealth magnets allow sound to pass directly through the structure, preserving audio fidelity without the degradation or reflections caused by conventional magnet designs.