ORTOFON SPU GM MONO MKII

Monophonic Cartridge

The SPU Mono GM MkII is a high-output moving coil phono cartridge, designed for the faithful reproduction of early 25-micron mono recordings. Its spherical stylus profile is perfectly suited to the physical characteristics of these wider grooves, ensuring optimal contact and delivering extremely accurate sound reproduction.

Ideal for enthusiasts of original analog sound, this cartridge allows historical vinyl records to be experienced with remarkable authenticity, preserving the tonal and dynamic qualities of the original recordings. Thanks to its high output, it can be connected directly to standard phono inputs without the need for a step-up transformer, simplifying system integration while maintaining signal purity. With the SPU Mono GM MkII, the listening experience of vintage mono recordings becomes immersive, precise, and deeply respectful of their original sonic identity.

Technical Specifications:

• Output voltage at 1000 Hz, 5 cm/sec: 3 mV
• Frequency range at -3 dB: 20-20,000 Hz
• Frequency response: 20-15,000 Hz; +2 / -1 dB
• Tracking ability at 315 Hz at recommended tracking force: > 70 µm
• Compliance, dynamic, lateral: 12 µm/mN
• Stylus type: Spherical
• Stylus tip radius: R 25 µm
• Tracking force range: 3.0-5.0 g (30-50 mN)
• Recommended tracking force: 4.0 g (40 mN)
• Tracking angle: 20°
• Internal impedance, DC resistance: 100 Ohm
• Recommended load impedance: 47 kOhm
• Cartridge body material: Grinded wood
• Coil wire material: High Purity Copper (OFC)
• Cartridge colour: Black
• Cartridge weight: 30.5 g