Kuzma - Stabi Ref 2 Digital AC Power Supply/Speed Control
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Kuzma - Stabi Ref 2 Digital AC Power Supply/Speed Control
The Kuzma Stabi Ref 2 Digital AC Power Supply / Speed Control is a dedicated external controller designed to provide precise, stable motor drive for Kuzma’s twin-motor Reference-series turntable platform. Rather than relying on raw wall current, it generates a carefully controlled AC signal for both motors, helping the turntable maintain consistent platter rotation with reduced vibration and improved long-term speed stability. This design supports the kind of pitch accuracy and mechanical refinement demanded by serious analog playback systems.
Kuzma’s published documentation describes a dual sine-wave output controlled by a sophisticated computer-based program, allowing very smooth waveform generation and very fine speed selection. Each playback speed can be independently selected, finely adjusted, and stored in memory, making it easier to dial in accurate 33 and 45 RPM operation. In the Stabi Reference 2 system, the outboard supply feeds both AC motors with precisely generated sine waves, amplified to help optimize drive consistency and minimize noise introduced by motor operation.
Built as a purpose-designed companion for Kuzma’s high-mass belt-drive architecture, the Digital AC Power Supply / Speed Control is an important part of the Stabi Ref 2’s performance envelope. It helps the turntable achieve the speed precision, low mechanical interference, and operational flexibility expected from a reference-grade analog front end, while giving users convenient external control over playback speed and calibration.
FEATURES:
- External digital AC power supply and speed control
- Designed for Kuzma twin AC motor turntable systems
- Quartz-controlled dual sine-wave output
- Independent 33 and 45 RPM speed selection
- Fine speed adjustment for precise calibration
- Memory storage for saved speed settings
- Helps reduce motor vibration and speed deviation
- Supports stable, reference-grade analog playback
- Extendable to 5 year warranty with product registration within 30 days of purchase
SPECIFICATIONS:
| Product Type | Digital AC Power Supply / Speed Control |
| Application | External motor controller for Kuzma AC motor turntables |
| Compatible Model | Kuzma Stabi Reference 2 |
| Output Speeds | 33 RPM, 45 RPM |
| Speed Adjustment | Independent fine adjustment with memory storage |
| Signal Generation | Quartz-controlled, computer-generated dual sine-wave output |
| Motor Connections | 2 or 4 motors |
| Output | 40-100 Hz, 110 V |
| Mains | 110 V or 230 V, 50-60 Hz |
| Power Consumption | 50W |
| Dimensions (W × H × D) | 4.72 " × 5.51 " × 15.75 " (120 mm × 140 mm × 400 mm) |
| Weight | 4.41 lbs (2 kg) |
| Warranty: | 2-year limited manufacturer warranty |


