The MoFi Electronics UltraDeck + M is a precision belt-drive turntable supplied with the MoFi MasterTracker MM cartridge. It combines a high-mass 1.3-inch Delrin platter, isolated 300 RPM AC synchronous motor, 10-inch Ultra tonearm, constrained-layer plinth construction and HRS-designed anti-vibration feet. The MasterTracker is factory-fitted to provide a complete analogue playback solution.
| Drive System | Belt Drive |
|---|---|
| Motor | 300 RPM AC Synchronous |
| Speeds | 33⅓ RPM / 45 RPM |
| Speed Selection | Two-Position Delrin Pulley |
| Power Consumption | < 5 W |
The UltraDeck uses a 1.3-inch Delrin platter weighing 6.8 lb. Its high mass supports stable rotation, while Delrin's mechanical properties provide a low-resonance interface between the record and platter.
| Material | Delrin |
|---|---|
| Thickness | 1.3 Inches |
| Weight | 3.08 kg / 6.8 lb |
The 10-inch MoFi Ultra tonearm uses a straight aluminium armtube and gimbaled bearing system. Low-friction bearings allow controlled vertical and horizontal movement, while Cardas Audio wiring maintains the cartridge signal path to the gold-plated RCA outputs.
| Type | 10-Inch Straight Aluminium |
|---|---|
| Bearing | Gimbaled |
| Overhang | 18 mm / 0.71 Inch |
| Offset Angle | 22.8° ± 2° Adjustable |
| Effective Mass | 25.14 g ± 0.5 g |
| Cartridge Weight Range | 5–10 g |
The included MasterTracker is a dual-magnet moving-magnet stereo cartridge featuring MoFi's V-Twin generator. Its two low-mass magnets are arranged in a V formation parallel to the record grooves. A Micro-Line diamond stylus and tapered aluminium cantilever are designed for accurate groove tracing, while the damped billet-aluminium body helps control unwanted resonance.
| Type | Dual Magnet MM Stereo |
|---|---|
| Generator | V-Twin Dual Magnet |
| Stylus | Micro-Line |
| Cantilever | Tapered Aluminium |
| Output Voltage | 3 mV |
| Frequency Response | 20 Hz – 25 kHz |
| Cartridge Weight | 9.7 g |
| Tracking Force | 1.8–2.2 g |
| Impedance | 47 kOhm |
| Recommended Capacitance | 100 pF |
| Static Compliance | 40 × 10-6/dyne |
| Dynamic Compliance | 10 × 10-6/dyne |
| Channel Separation | 27 dB at 1 kHz |
| Channel Balance | 1.0 dB at 1 kHz |
| Coils | Ohno Continuous Cast Copper |
| Body | Damped Billet Aluminium |
The MasterTracker weighs 9.7 g, which falls within the Ultra tonearm's specified 5–10 g cartridge range. Its 3 mV output and 47 kOhm impedance make it suitable for a standard MM-compatible phono input or external MM phono stage.
The UltraDeck's plinth uses a constrained-layer structure consisting of three aluminium plates bonded to an MDF body. This construction adds mass and controls unwanted mechanical resonance, helping maintain the tonal character of the recorded signal.
A hardened-steel inverted bearing combines steel, bronze and sapphire components for smooth, quiet platter rotation. HRS-designed anti-vibration feet help isolate the turntable from external vibration and acoustic feedback.
| Built-In Phono Stage | No |
|---|---|
| Included Cartridge | MoFi MasterTracker MM |
| Cartridge Output | 3 mV |
| Required Phono Input | MM-Compatible PHONO |
| External MM Phono Stage | Compatible |
| Line-Level Input Only | External MM Phono Stage Required |
| Wow & Flutter | 0.017% – 0.025% |
|---|---|
| Signal-to-Noise Ratio | 74 dB |
| Width | 19.69 Inches / 50.01 cm |
|---|---|
| Height | 6 Inches / 15.24 cm |
| Depth | 14.25 Inches / 36.20 cm |
| Dimensions (W × H × D) | 19.69 × 6 × 14.25 Inches |
| Turntable Weight | 10.48 kg / 23.1 lb |
| MasterTracker Weight | 9.7 g |