.By now you might already have come across the A8000 in various reviews and social media posts online. Ours included.
You've also probably noticed that the A8000 comes backed with a ton of research, science and technology. In this post we take a stab at breaking down the A8000's tech talking points for the hesitant audio hobbyist.
final's newly developed DD Diaphragm checks all the boxes of a perfect dynamic driver: It's speedy, light, rigid and Truly Beryllium. Not Beryllium coated, but fully made out of beryllium, making it possibly the first of its kind in the IEM industry.
A rare, expensive mineral, Beryllium is light, rigid and chemically stable. However, these same characteristics can make machining and forging beryllium a difficult affair, this coupled with beryllium's relatively high price makes an intimate knowledge of the metal's physical properties and idiosyncrasies essential for producing a truly beryllium driver diaphragm.
Beryllium's rigidity means that it fractures easily when not machined with the proper care or equipment, while it's abrasiveness might prematurely shave off tool coatings which are essential to cutting and grinding making the production of beryllium diaphragm an involved, time consuming process.
So why go through all the trouble?
For one, Beryllium coated dynamic drivers might not be able to make use of the
According to final, the typical dynamic driver moves from 10 to 44,000 times per second during your listening sessions, an incredible speed that make beryllium's lightness and rigidity a immensely beneficial to its application as a dynamic driver.
A fully beryllium driver maintains its shape even under considerable stress, allowing it to both start and come to rest incredibly quickly. This reduces the inertia in the diaphragm, giving the A8000’s sound the cleanliness and clarity required to work through complicated, layered tracks.
This clarity helps final Audio's newest flagship gain its it's truly transparent tuning, lending depth, width and the power of clear imaging to the A8000's soundstage
As much as the A8000's Beryllium driver contributes to it's resolved, transparent tuning, its thinness and lightness makes the beryllium driver extremely delicate and easily affected by unnecessary pressure or vibrations within the space of a chassis.
final Audio's Tetra-Chamber construction ensures that spaces within the chassis is engineered to provide the best environment for the A8000's beryllium driver to work in. Preventing environmental changes and manufacturing factors from affecting the A8000s sound quality.
Comprising of an Ante Chamber, 1 MMCX Chamber and 2 Rear acoustic chamber, all 4 chambers have been carefully designed and redesgined for optimal sonic performances, where final Audio ran both simulations and real-world tests to determine their usefulness.
The Ante-chamber's shape and volume is described by final Audio as having a large impact on the A8000's overall sound quality. Especially since the A8000's beryllium driver is directly mounted to the ante-chamber, a design choice that reduces any unnecessary vibrations to the driver.
Rear Acoustic Chambers
Pictured above are the 2 rear acoustic chambers that help in controlling the A8000's low frequencies in terms of both volume and tightness. The chamber highlighted in blue is connected to the environment through a vent, allowing changes in pressure to be alleviated by the chamber in red which is strategically placed at the rear of the beryllium driver, smoothing any pressure surges and maintaining a stable driver response. (Elaborate, this aint enough)
MMCX Connection Chamber
The final chamber we'd like to highlight is the A8000's MMCX Connection Chamber, an addition ensuring the consistency between the MMCX connectors on all of final's A8000 units.
final recounts an incident during the prototype phase that led them to find that the most minuscule changes in the circuitry of the MMCX connector, even the size of a solder point, could negatively affect the sound quality of the immensely sensitive beryllium driver.
This led to the addition of an insulation chamber that helps to prevent the solder point from touching the chamber and shorting unnecessarily.
Anti-Resonance Direct Mounting
final Audio seems to have optimised every last detail of their new flagship, all the way down to, driver mounting, The dynamic driver is an incredibly important part of an IEM, functioning almost as a heart of sorts. This is even truer for the A8000 and its beryllium driver. Leading then to optimise even the way they mount their driver.
While the conventional way to mount a driver is by applying elastic adhesive between driver and housing, this can unintentionally work as a cushion, leaving the driver open to unnecessary vibrations. Instead of an elastic adhesive, final uses an ultra strong adhesive that binds the side of the driver and the chassis, this adhesive can only be applied through a tiny gap in order to maintain a perfect seal.
This meticulously cut groove must be measured and milled through CNC processes
The A8000 is now available at our final stockists! Find one near you here: http://bit.ly/2EXJawy