TechDAS Air Force IV

A new benchmark in analogue sound.

Driven by TechDAS’ innovative ‘air’ technologies, this turntable realises their vision of ultimate analogue reproduction.

The TechDAS Air Force turntables feature unique pneumatic technologies including air bearing that absolutely isolates the rotating platter and the record from any vibration.

Additionally, their vacuum LP hold-down system clamps an LP onto the platter.

With these “air” technologies, the Air Force turntables achieve an unparalleled sound quality, compared to conventional analogue turntables

Today they believe analogue sound must evolve beyond its past forms, after more than 30 years of the digital era.

Their pursuit of superior analogue sound seeks to push the boundaries of sound-to-noise ratio, drawing inspiration from advancements in modern digital audio.

TechDAS technologies deliver cutting-edge analogue sound, redefining performance with precision and innovation.

Features a Precision Machined One-Piece Platter, a hallmark of their higher-end models

The Air Force IV turntable employs a heavy-weight one-piece platter machined from solid A5056 alloy while the entry model, Air Force V Premium uses a dual platter system.

The result is overall improvement in sound quality such as an extended frequency range and noticeably enhanced dynamics.

Combined with their air bearing system, the 9kg platter allows for an extraordinary low noise floor.

Its tapered spindle absorbs any swaying of an o-center LP.

On top of the platter is applied a special thin pad made of a damping and antistatic material to protect records.

Elevating the Entry-Level Experience with Core Air Force Technologies

The Air Force IV is a model uniquely packaged for a higher level of listening experience compared to the popular entry model, Air Force V Premium.

While minimising increase in footprint, Air Force IV has a low vibration, 2-phase 4-pole AC synchronous motor, which is separated and isolated from the main chassis as in the upper models.

The drive belt is a 4mm flat belt in width; the same one used in the upper models.

Made of surface polished polyester fibre, this belt ensures stable rotation and quickly brings the heavy platter to a rated speed.

By driving the platter with a separated motor unit, it realises an extremely high signal-to-noise ratio.

The Air Force IV sits on four suspension feet incorporating specialised damping materials as the Air Force III Premium S, so that it optimally blocks external vibrations and provides an excellent vibration proof property.

Despite its compact body, it can accommodate up to three tonearms.

Benefitting from various technologies developed for its upper models, the Air Force IV realises high-resolution sound imaging and enhanced sound quality while remaining compact in size.

Specifications TechDAS Air Force IV

Main unit

Chassis: One-piece chassis precision machined from solid aluminium alloy A5052. Silver anodised satin finish, 21.5kg

Platter: One-piece platter precision machined from solid aluminium alloy A5056, 8.7kg

Motor Unit: Precision machined aluminium alloy A5052. Silver anodised satin finish 4.1kg

Total moment of inertia: 1.017kg/cm2

Drive system: Belt-drive with double-side polished polyester fabric flat belt

Driving motor : External 2-phase 4-pole AC synchronous motor

Motor Power Supply : Digital rotational control system driven by power amplifier

Rotational speed: 33.3rpm, 45 rpm

Wow & Flutter: below 0.03%

Dimensions: 420.5 (W) x 168 (H) x 368 (D) mm

Total weight: 34.4 kg

Minimum dimensions for setting up: 521 (W) x 418 (D) mm

POWER SUPPLY UNIT

Power consumption: 50W

Dimensions: 350(W), 160(H), 270 (D) mm, 9kg

Minimum dimensions for setting up:　350(W) x 330(D) mm

INCLUDED ACCESSORIES

1 x Tonearm Base for rear right or front right positions (drilled for specified tonearm)

1 x Platter Cover

Brand

TechDAS

TechDAS Hideaki Nishikawa’s Founders history 1963 Obtained a degree in mechanical engineering. 1964 Joined Stax Ltd. as an engineer and engaged mainly in manufacturing engineering, development of electrostatic headphones, etc. 1973 Moved on from Stax and founded an OEM together with a few members from Stax. The OEM was set up to design and manufacture audio products. The representative products for this company were Micro Seiki’s electrostatic headphones, Infiniti’s Black Widow, Craft AC 300 Tone Arm, among others. 1980 Joined Micro Seiki Co. Ltd. Held a position of manager of the technical department and later as Sound Business Director. The statement product planned and designed from this period is the SX-8000 system turntable. Also developed a line of accompanying products. 1989 Founded Stellavox Japan Inc. together with Yasuo Nakanishi, who was the CEO of RF Enterprises Inc. Started the import & distribution business of high-end audio equipment with dedicated force. The company name was changed to Stella Inc. in June, 2012. 1994 Became CEO of Stellavox Japan Inc. (current Stella Inc.). 2010 Founded the house brand, TechDAS, which has been offering the Air Force analogue turntables

The process of manufacturing an LP record is critical to the sound. When the lathe carves a groove into a lacquer disc, the disc is held down onto the platter using a vacuum. This reduces wow and ﬂutter, any degradation of sound quality, and also increases the signal to noise ratio, thus avoiding anything that may have a negative effect when creating a very high quality master. Then the engineer lowers the pickup into the groove in the lacquer disc and listens to ensure the groove is properly cut. This lacquer will be the master to produce the vinyl records. To re-enact the same status in record playback, all the models of the Air Force series feature a vacuum LP hold-down. Their goal for the Air Force Series is to precisely extract and reproduce all information embedded in the groove, with nothing added or sacriﬁced.