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Astell&Kern

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AK T8iE Mk

THE ESSENCE OF TESLA TECHNOLOGY

Beyerdynamic + Astell&Kern

The AK T8iE Mk succeeds and improves on the AK T8iE, the world’s first Tesla in-ear headphone, collaboratively developed by Astell&Kern and beyerdynamic. The new flagship model promises truly outstanding sound and exceptional build quality.

The AK T8iE Mk has high-grade silver-plated fiber cables with coaxial construction, an upgrade from copper cables. It also introduces a new voice-coil, drawing on all of the audio excellence beyerdynamic has pioneered since 1924. Despite its small size, the AK T8iE Mk allows users to experience an extremely wide frequency range, with crisp bass, well-balanced mids and crystal-clear highs.
Like its predecessor, the AK T8iE Mk, is hand-made by highly skilled engineers in Germany. Combining Astell&Kern's philosophy of "providing the original sound" with the expertise of beyerdynamic, the AK T8iE Mk sets a new benchmark.

AK T8iE vs. AK T8iE Mk

AK T8iE

AK T8iE Mk

High-grade voice-coil

New, improved voice-coil

highest reliability / extremely low distortion
easier movement of diaphragm at high volume levels

Premium copper cable

High-grade transparent silver-plated cable

high purity silver,copper alloy conductors for the purest sound
aramid fiber core for ultimate strength / skin friendly, ultra flexible transparent sleeve

Gold-plated MMCX connectors

High precision gold-plated MMCX connectors

perfectly fitting components / highest reliability
lowest resistance for best audio performance

Internal Structure

High-grade transparent
silver-plated cable
Outer housing
shell
Tesla Magnet
assembly
Diaphragm
suspension
Diaphragm
with new voice-coil
Inner housing
shell
Earwax
protection
Eartip High precision
gold-plated
MMCX connectors

New, improved voice-coil

The AK T8iE Mk introduces a brand new voice-coil for a superb listening experience, drawing on all the heritage and audio excellence beyerdynamic has pioneered since 1924.

Keeping the perfectly tuned acoustic signature of the AK T8iE, the new voice-coil increases reliability and lowers distortion to a minimum.

Each voice coil is carefully inspected and adjusted by hand, using a digital microscope camera with 40x magnification.

High-grade transparent silver-plated cables

The AK T8iE Mk is supplied with high-grade silver-plated fiber cables with coaxial construction, a strong upgrade from standard copper cables.

To ensure highest wearing comfort, the cables are skin-friendly and ultra flexible. The transparent sleeve effectively reduces cable noise.
All conductors are made from high purity silver/copper alloy (Ag–Cu–alloy) for the purest sound.
The cable material is specially fabricated for the new AK T8iE Mk.
For ultimate strength, the cables are reinforced with high tension aramid fiber cores.

Aramid fiber core
for ultimate strength
High purity silver/
copper alloy straight conductors
Transparent FEP insulation High purity silver/
copper alloy spiral conductors
Transparent FEP insulation Skin friendly, ultra flexible
transparent sleeve

High precision gold-plated MMCX connectors

The high precision MMCX system consists of tolerated, including or such as
: plugs, sockets and toothed washers.

Low electrical resistance prorides the best audio performance possible. High reliability for daily use.

Great flexibility

Besides the standard 1.3m cable with the general-purpose 3.5mm plug there is an additional balanced cable for Astell&Kern devices(works with AK70 / AK100/ AK120/ AK240 / AK300 / AK320 / AK380). It provides a balance output with its specific 2.5 mm 4-pole terminal. A leather case stores the in-ears safely for transport.

Used with AK380

Specification

General Specifications
Model
AK T8iE Mk
Transducer type
Dynamic, moving-coil
Operating principle
closed
Frequency response
8 – 48,000 Hz
Impedance
16 Ohm
Total harmonic distorsion
<0.2 %
Power handling capacity
10 mW
Nominal sound pressure level
109 dB SPL
Sound coupling to the ear
intra-aural
Cables
two cables: one for balanced-mode use, one for unbalanced-use 1.30 m, two-sided, detachable
Connector
MMCX at earphones
/ 3.5 mm 3-pole jack plug on unbalanced cable / 2.5 mm 4-pole jack plug on balanced cable
Weight without cable
7 g per pair