TechDAS Air Force III Premium er baseret på en særdeles gedigen plint og en separat kombineret pumpe og strømforsyning.
Air Force pladespillerne er baseret på en unik luftteknologi (deraf Air Force) som omfatter et luftleje som tillader pladetallerkenen at flyde på et meget tyndt lag luft. Denne mekaniske løsning isolerer den roterende pladetallerken fra enhver vibration. Endvidere benyttes luft til at skabe et vakum som holder LP'en nede på pladetallerkenen.
Disse teknologier er med til at skabe afstand til konventionelle pladespillere, når vi taler lyd og ydelse. De fleste pladespillere på markedet lyder som pladespillere altid har gjort, men TechDAS mener at tiden er inde til at tage næste skridt og drage fordel af udviklingerne indenfor den digitale lyd.
TechDAS Air Force III Premium vejer 21 kg og 14 kg for den eksterne enhed. Plinten leveres komplet med armbase, forberedt til den tonearm som måtte ønskes (ikke inkluderet i prisen). Plinten kan monteres med yderligere armbaser til montering af flere tonearme. TechDAS leverer endvidere tonearme og pick-up'er.
Ken Kessler reviewed Air Force III Premium for
HiFi News June 2019 edition. Please read the full review here:
The design concept behind the Air Force III Premium
The Air Force III
Premium consists of two units: the Main Unit (including outboard motor) and the
Pump / Power Supply / Air Condenser Unit.
The weight and sound of an
analog turntable have a strong correlation. In order to make a heavier turntable
while keeping the chassis size to the original Air Force III, our team chose
gunmetal for the platter of this model. This material is an alloy of copper and
tin and was often used for audio equipment in the heyday of analog audio.
The platter for the Air Force III Premium is precision cast and surface
polished with a solid structure, unlike most conventional gunmetal platters that
have a hollow construction. This results is a heavy platter of 29 kg, more than
three times heavier than the aluminum platter used in the original III which
weighs in at 9 kg. With this new gunmetal platter, the total weight of the main
unit is more than 50 kg.
As a result of the increase in total weight, an
extended frequency range is delivered and dynamics are noticeably enhanced. At
the same time it has achieved a significantly lower noise floor thanks to the
use of our air bearing. Furthermore, as gunmetal is relatively a soft and
tensile metal, you will notice that a subtle glow is added to the sound.
The chassis is made of solid aluminum just like the original model. The black
anodized and highly polished surface contrasts very nicely with the gold colored
gunmetal platter. With a minimal sized CNC machined aluminium chassis the Air
Force III Premium affords maximum freedom during setup. The surface is finished
in high gauge black anodized with a high gloss polish. Up to 4 tonearms, ranging
from short (9”) to long (12”) tonearms can be fitted to the frame.
Air Force Series embodies the highest standards and subtlety of Japanese
craftsmanship in its build and finish. The sophisticated aesthetics represent
our commitment to every detail.Floating the platter with our air bearing
A conventional bearing unit supporting the platter would be subject to huge
loads due to the weight and high inertia involved, and even the highest
precision bearing could become impaired over time. In the TechDAS Air Force
Series we have thus developed a unique air bearing method, where the platter
floats and rotates in almost total silence, completely isolated from vibrations
transmitted to the record from the floor, via the chassis and center spindle.
Furthermore, the weight of the platter does not place any load on the
bearing. This ensures the performance will continue maintenance free for many
years, avoiding effects of abrasion or sounds caused by friction. The Air Force
III Premium has a precision cast gunmetal platter with precision coating which
is also highly polished, and weighs in at 29 kg.
Vacuum LP hold down
conventional bearing unit supporting the platter would be subject to huge loads
due to the weight and high inertia involved, and even the highest precision
bearing could become impaired over time. In the TechDAS Air Force Series we have
thus developed a unique air bearing method, where the platter floats and rotates
in almost total silence, completely isolated from vibrations transmitted to the
record from the floor, via the chassis and center spindle.Motor Unit
The Air Force III premium has two 150W DC power amplifiers to drive its
synchronous motor which provide a stable and powerful drive system. This ensures
the correct rotation of the massive platter.
In operation and once the
selected speed is achieved, the motor torque is then reduced automatically to
below 50% to maintain accuracy of rotation. No servo control is used from this
point as that may negatively affect the sound quality. However a sensor is
constantly monitoring the rotational speed for perfect accuracy of operaton, and
this data is fed back to the motor should any speed adjustment be required.
The Motor Unit is housed in a separate chassis with high gloss black
anodized finish that matches the main unit.The ultimate level of
TechDAS believe our turntables are the only ones that achieve
the ultimate level of reproduction from vinyl. We are committed to pursuing an
ideal analog reproduction system, one that equals or exceeds the highest
standards and care used when the record was cut in the original production
process. In the production of a record, a lathe carves a groove into a lacquer
disc, and the disc is held down onto the platter using a vacuum.
Force series re-enacts this same status in record playback to precisely extract
and reproduce all information embedded in the groove, and achieving this without
adding anything or sacrificing detail. A remarkably black background and low
noise levels are made possible by using “air force”, and combined with our
innovative rotation mechanism featuring exceptional vibration absorption, you
can experience a new dimension of analog sound.
MAIN UNIT &
Chassis: Precision machined aluminum alloy (A5056) Black anodized and high
Weight: 21 kg
Platter: Gunmetal. Surface protection coating
Platter Weight: 29 kg
Total moment of inertia: 3,506 kg・cm2
Belt-drive, polished and nonflexible polyurethane fiber belt
synchronous motor. Rotation speed controlled by DC amplifiers
33.3 rpm / 45 rpm
Wow & Flutter: below 0.03 %
Dimensions: 473 (W) x 170
(H) x 363 (D) mm
Minimum Dimensions for setting up: 564 (W) x 413 (D) mm
Total Weight: 55 kgPUMP / POWER SUPPLY/ AIR CONDENSER UNIT
consumption: 50 W
Dimensions: 430 (W) x 175 (H) x 370 (D) mm
Weight: 14 kg
Minimum depth for setting up: 430 (D) mmACCESSORIES SUPPLIED
base x 1 (drilled for specified tonearm).
An extra cost may be required
according to the tonearm.
Platter Cover x 1.
Cables, Air hoses, Platter
setup tools, Users manuals.OPTIONAL ITEMS & ACCESSORIES