Engineered for uncompromising analog performance, the OMA Cast Iron SP-10 Plinth System transforms a legendary motor unit into a precision instrument. Designed specifically to accommodate the Technics SP-10 series (including MK2 and MK3), this plinth delivers mass, rigidity and resonance control in one elegant package.

Key Features:

• CNC-machined from a single sand-casting of hypo-eutectic grey cast iron — the same class of iron used in industrial machine tools — providing exceptional structural stability and vibration dampening.

• Underside lattice of cast chambers filled with a vibration-damping polymer, designed to eliminate mechanical noise and resonance before it reaches the stylus.

• Removable armboards CNC-machined from torrefied (thermally modified) Pennsylvania ash: dimensionally stable, acoustically superior, and ready to accept tonearms from 9″ up to 12″ (or longer). 

• Feet mount with ¼″-20 hardware holes (standard in high-end audio racks); supplied with precision leveling feet.

• Available finishes: Clear lacquer or black powder-coat.

Technical Specifications:

• External dimensions (single-arm version): ~ 664 mm × 518 mm × 105 mm (26 1/8″ × 20 3/8″ × 4 1/8″) 

• Approximate weight: ~ 50 kg without motor unit.

• Tonearm compatibility: Accepts tonearms with effective length from 9″ to 12″ (229 mm to 305 mm) and beyond via custom armboards.

• Finish options: Clear lacquer or black powder-coat.

Why It Matters:

When you pair a high-precision motor such as the Technics SP-10 with a plinth of lesser quality, the motor’s capability is compromised by elasticity, resonance and instability. This OMA plinth system provides the inert, rigid, ultra-stable foundation that allows the SP-10 to operate at its designed level of mechanical performance: minimal distortion, maximum signal fidelity, and an interface between turntable and room that disappears. In short: the plinth becomes part of the sound chain, not just the base it sits on.

Ideal For:

Audiophiles, mastering engineers, and serious vinyl lovers who already own (or are installing) a Technics SP-10 motor unit and wish to extract its full potential. This plinth is especially suited for installations where engineering and sonic integrity matter: dedicated listening rooms, high-end systems, silent racks and custom analog environments.

Ordering & Delivery Info:

• Made-to-order: each plinth is CNC-machined and finished per order; typical lead time to dispatch to India may vary — please contact us for current status.

• Shipping note: due to its mass (~50 kg) and size, special freight handling applies; please ensure suitable support structure and loading/unloading setup at destination.

• Installation note: The SP-10 motor unit (and tonearm/cartridge) are not included; this listing covers the plinth only.

• Please verify tonearm dimensions and mounting requirements before confirming armboard choice or customisation.

Use Cases & Setup Tips:

• Ensure the rack or furniture supporting the plinth is level, rigid and vibration-controlled; the benefit of the plinth is maximised only when the supporting structure is inert.

• Allow sufficient clearance around the plinth for tonearm adjustments, cable routing and service access — ~600 mm recommended on all sides.

• Use precision feeler gauges or digital spirit level during installation to confirm that the armboard surface is level in both axes; fine tonal improvement has been reported from sub-0.1° deviation.

• After installation, allow at least 48 hours of idle settling before critical listening: cast iron and polymer layers can stabilise during initial use.