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Micro Seiko DD-31 Turntable Direct Drive (Rare Turntable!) - $850 (dublin / pleasanton / livermore)
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Excellent condition works perfect! New Custom Dustcover thicker than the original and has the top front and back curved. New Solid Brass Logo Badge with etched lettering, New Monster Cable Gold plated RCA Plugs. Like new stylus sounds very good.
Setup for you to hear.
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The Micro Seiki DD-31 is a high-quality, direct-drive turntable manufactured in Japan during the 1970s. It is a highly regarded vintage turntable, known for its precision engineering and stable playback, making it a sought-after piece for audiophiles. While Micro Seiki no longer produces new turntables, vintage models like the DD-31 can be found on online marketplaces like eBay and specialized audio websites.
Features and specifications
According to Audio Antiquary, the DD-31 has the following features and specifications:
Drive system: Direct drive with a DC servo motor.
Speeds: 33.3 and 45 rpm.
Automation: Manual operation.
Tonearm: Static-balance type.
Wow and flutter: 0.02%.
Rumble (Signal-to-noise ratio): >75 dB.
Platter: 310mm, die-cast aluminum.
Dimensions: 468 x 375 x 155mm.
Weight: 8 kg.
Performance and reputation
The Micro Seiki DD-31 is prized by collectors and enthusiasts for its high-quality construction and excellent performance for its era.
Precision engineering: Micro Seiki was known for producing high-end turntables with precision engineering, and the DD-31 reflects this craftsmanship.
Stable playback: The direct-drive system provides precise and stable playback, which is crucial for high-fidelity audio reproduction.
Aesthetics: The turntable's "timeless" aesthetic, often featuring a stylish wood grain, is also highly praised by enthusiasts.
Value: Though considered an entry-level model within the larger Micro Seiki lineup, the DD-31 is still considered a high-performance turntable, outperforming many competing turntables of its day.
Where to buy
As a vintage turntable, the Micro Seiki DD-31 is only available on the used market. You may find one from the following retailers and marketplaces:
eBay: Vintage Micro Seiki DD-31 turntables are frequently sold on eBay. Listings specify the condition of the turntable and may include details on whether it is fully functional.
Specialized audio marketplaces: Occasionally, vintage audio dealers and enthusiasts offer serviced Micro Seiki turntables for sale on dedicated online forums or marketplaces. These often come with a guarantee of functionality.
Used hi-fi forums and social media groups: Groups on Reddit, such as r/turntables and r/audiophile, sometimes have users selling or gifting vintage turntables like the DD-31. However, these purchases are often sold "as-is," so buyers should proceed with caution.
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What should I look for when buying a used DD-31?
When buying a used Micro Seiki DD-31, you should closely inspect its mechanical, electronic, and cosmetic condition. This vintage, direct-drive turntable is well-regarded, but like any 40+ year-old electronic device, it can have issues related to age and use.
Before you inspect
Before you go to see the turntable in person, ask the seller about the following:
Service history: Has the unit ever been serviced? If so, when, and what work was done?
Operating condition: Ask for a demonstration and confirm that all functions work as they should, including both 33 and 45 rpm speeds.
Missing components: Confirm that all original parts are present, including the dust cover, hinges, platter mat, and headshell. Note that the original cartridge is unlikely to still be in good condition and will most likely need to be replaced anyway.
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During your inspection
If you can, inspect the DD-31 in person before buying it. Bring a known-good record to test.
Mechanical inspection
Platter: The platter should spin smoothly and quietly, without any wobbling or scraping noises. Check that it reaches and maintains the correct speed. On a direct-drive model like the DD-31, problems with speed stability can indicate issues with the motor or speed control electronics.
Tonearm: The tonearm should move freely on its bearing with no resistance or grinding. Check for any damage or excessive play in the bearings, and ensure the arm lock and cueing lever operate properly.
Controls: Test all switches and knobs, such as the speed selector and power button, to make sure they function without crackling or feeling loose.
Electronic inspection
Motor noise: Put your ear close to the platter as it spins. You should not hear any excessive hum, grinding, or buzzing from the direct-drive motor.
Grounding: The DD-31 is known to be susceptible to grounding issues, which cause humming. Test the unit to see if there is any audible humming or buzzing that might require investigation.
Cables: The DD-31 has a non-removable power cord and RCA cables. Examine them for any damage, fraying, or oxidation.
Cosmetic inspection
Chassis: The DD-31 typically has a wood-grain finish. Check for any deep scratches, dents, or signs of water damage.
Dust cover: The original dust cover will likely have scuffs, but check for any deep scratches or cracks. Also, test the hinges to ensure they hold the lid up properly.
After your inspection
If you purchase the turntable, plan for the following items to be replaced or addressed for optimal performance:
Stylus: The stylus is a wear-and-tear item and should be replaced immediately, as a worn stylus can damage your records.
Cartridge: Consider the cost of a new cartridge, as this can significantly improve sound quality.
Servicing: The capacitors inside the turntable may be nearing the end of their lifespan and could require professional servicing to replace.
What are common DD-31 grounding issues & how can they be fixed?
Are there upgrades for the DD-31's tonearm or platter?
What are signs of motor issues in direct-drive turntables?