Ortofon RS-309D 12″ dynamic-balance tonearm

Varenummer: Ortofon RS-309D 12" dynamic-balance tonearm

Ortofon RS-309D 12″ dynamic-balance tonearm


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Ortofon RS-309D 12″ dynamic-balance tonearm

RS-309D 12 inch Ortofon’s D series tonearm takes analog sound reproduction to a higher level with highly configurable VTF options and a dynamic balance system for increased stability when tracking warps and other anomalies.

D series tonearms can be used for a wide array of cartridges, feature anti-skating control.


• Dynamic balance graduated vertical tracking force (VTF) control through a new spring design
• The new short wire spring, housed in the pivot case, eliminates unwanted vibrations in the tone arm
• VTF in the range 0-5 grams can be precisely adjusted by means of the supplied digital force gauge
• Anti-skate control adjusted by calibrated dial in the range 0-5 gram
• Tone arm height, and thereby VTA, is easy adjustable on the tonearm base.
• Detachable head shell and tone arm cable, with standard SME-type connectors.

Technical data:

Effective mass (without headshell): 4.0 g

Effective length (distance between the stylus and pivot point): 329 mm

Mounting distance between the pivot point and turntable center: 314 mm

Offset angle: 19 degrees

Overhang: 15 mm

Tracking force adjusting range (direct reading): 0 – 5 g

Height adjustment range: 42 mm – 57 mm

Diameter of  the armbase mounting hole: 34 mm – 36 mm

Diameter of the center shaft: 16 mm

Fixing holes PCD: dia. 50 mm

Size/Thread: dia. 3.2 mm (dia. 3 mm x 20 mm and dia. 3 mm wood screw)

Digital scale DS 1 included

Headshell SH-4 Black included, headshell weight 9.4 g, screws weight 2 g

Download RS-309D Mounting template here

Download RS-309D Armbase fixing locating drawing here