Micro Seiki DD-31

 Micro Seiki DD-31

Direct Drive Electro Auto Lift/Stop Complete Stereo Turntable with Rose, Ebony or Black Wooden Base and Dust Cover

 Direct Drive DC Servo Motor

Micro Seiki DD-31 turntables utilize a direct-driven DC servo-controlled drive motor. The advantages of this type of motor/transmissionless system are extreme speed stability and increassed torque.  Unaffected by temperature changes and voltage fluctuations, the resultant wow and flutter components are less than 0,03% WRMS and the signal-to-noise ratio greater than 63 dB JIS (75 dB DIN-B).

 Low-Mass Straight Tonearm with Dual Radial Bearings

A special aluminum alloy is used to give the arm its formidable strength and exceptionally low mass. Both qualities are needed to take full advantage of today's supercompliant cartridges. The straight-line geometry assures the most accurate tracking angles as well as contributing to the arm's low mass. A pair  of precision radial bearings give the arm a lateral sensitivity of only 10 milligrams.

Even the normally-overlooked signal connectors are of the constant-wipe type, insuring contact maintenance at all times.

Headshell

Thanks to the use of carbon fibres, the headshell is as light and rigid as the arm itself. It joins the arm with a semi-integrated plug-in system that utilizes thick gold-plated wiping-type contacts. Oxygen-free copper leads are used to exclude electromagnetic influences (eddy-current lossles) resulting in exceptional transmission characteristics (improved S/N ratio)

Skating Force Cancellation

Anti-skating is provided by a precision calibrated adjustment to axactly match vertical tracking force.

 Oil Damped Cueing

Feather-light contact between stylus and record groove is provided by the oil-damped cueing system. It is silent, smooth and, at the end of a record, completely automatic.

 Genuine Wood Base

One of the best acoustical dampening materials known is wood. It is used as the base material for all Micro Seiki turntables and is available in both natural rosewood and ebony finishes.

Special feet

All Micro Seiki turntable systems are equipped with specially-developed anti-feedback feet. The chart below shows a comparison between the isolation provided by conventional rubber feet and the Micro Seiki feet. As it apparent, sub-sonic resonance is greatly reduced by the Micro Seiki design.

Specification DD-31

Motor

Drive System:  Direct-Drive DC Servo Motor

Speed:  33-1/3 and 45 rpm

Fine Speed Adjustment range:  ±6%

Turntable Platter:  Die-cast aluminum; 4 Strobo stripes

Diameter :  310 mm (12-1/4")

Weight :  1,2 kg (2,6 lbs)

Wow and Flutter:  less than 0,03%

Signal-to-Noise Ratio:  More than 63 dB (JIS);  75 dB (DIN-B)

Tonearm

Type:  Low static mass straight type

Lateral Sensitivity:  10 mg by Dual precision Miniature Ball Bearing

Head Shell:  H707X, Light weight, mixing Carbon Fibres, Gold plated 4-pin plug-in connector

Effective length:  237 mm (9-3/8")

Overhabg:  15 mm

Maximum Tracking Error:  less than 1,5

Range of Tracking Force Adjustment:  0 -3 g

Power Supply: 100 - 120 V, 220 - 240 V 50/60 Hz

Dimensions (W x D x H):  468 x 375 x 155 mm (18-3/8" x 14-3/4" x 6-1/8")

Cartidge GAS 2-MF (Optional)

Type:  Moving Flux High Compliance Type

Frequency Response:  10 - 25,000 Hz ±2 dB

Output Voltage:  3,2 mV (1 kHz)

Channel balance:  less than 1,0 dB (1 kHz)

Channel Separation:  more than 25 dB (1 kHz)

Dc resistance:  800 Ω

Impedance: 3 k Ω (1 kHz)

Compliance:

Dynamic : 10 x 10¯⁶ cm/dyne

Static : 25 x 10¯⁶ cm/dyne

Suitable Tracking Force:  1,3  ±0,3 g

Weight:  5,4 g

Stylus Tip:  0,3 x 0,7 mill Elliptical