Thorens TD 309 Tri-Balance

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33 OCH 45 VARV



• New innovative Tri-Balance suspended sub chassis turntable
• New suspension system to make setting up easy
• Low Noise, Low Voltage electronically speed controlled DC Motor
• Adjustable belt tension for best performance
• Aluminium sub platter with single line contact
• Fused silica platter for consistency and sound quality
• New low resonance TP 92 arm with precision Japanese bearings
• Arm adjustable for azimuth and overhang


The TD 309 sets new standards in analogue replay. The turntable's innovative three-point-suspension (Tri-Balance) ensures perfect balance in both mechanical and aesthetic terms. Form and function work in harmony to make the TD 309 a turntable that is guaranteed to reveal the magic of analogue replay.

A new take on sub-chassis technology. No one can deny that Thorens has made a major contribution to turntable engineering in the form of sub-chassis technology. Now the next chapter opens. The novel sub-chassis system of the TD 309 allowed us to optimally distribute the weight of the turntable, achieving perfect balance in both mechanical and aesthetic terms. Form and function work in harmony to make the TD 309 a turntable that is guaranteed to reveal the magic of analogue replay

Tri-Balance. Because the three-point suspension system is housed in the turntable’s feet, the plinth is considerably slimmer than that of conventional sub-chassis decks. It is manufactured from a single piece of MDF, a material that offers excellent acoustic properties and can be machined to very tight tolerances. This enabled us to adopt a no-compromise approach to designing and positioning crucial components such as the tonearm and the motor. The result is a perfectly balanced turntable.

The heart of the turntable. Driven by a decoupled low-noise low-voltage DC motor via a flat belt, the precision-machined sub-platter supports the main platter, which is made from fused silica. A special contact ring reduces resonance in the main platter.

The TP 92 tonearm, which was specially designed for Thorens turntables, uses an ultra-low-friction bearing and an innovative magnetic anti-bias system with zero stiction. The arm tube is made from rolled aluminium that is damped using RMR (Reduced Modal Resonance) technology. The brass counterweight at the end of the arm tube is double-decoupled, and the tonearm is so designed that its centre of gravity is level with the stylus.

Technical Specifications

Issued 10/2014. Specifications are subject to change without prior notice. © 2014 Thorens Services AG, Switzerland. Further information: TD 309

Turntable Operation manual Drive

System belt-drive (flat belt around sub-platter)

Motor servo-controlled DC motor

Speeds 33-1/3, 45 rpm

Speed Change Electronic

Platter 12” / 2.3 kg (glass)

Tonearm THORENS® TP 92

Pick-up Cartridge THORENS® TAS 267

Anti-skating (Bias) by magnet

Automatic Shut-off none

Power Supply external plug-in power supply, 12 V DC/AC, 6 W min.

Dimensions 470 x 125 x 430 mm (W x H x D)

Weight 6.5 kg

Finish MDF plinth with laquer in red, black or white (high gloss) / red or black (matte)

Scope of Delivery power supply, RCA interconnects, stylus gauge, spirit level, cartridge alignment protractor

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