Ortofon SPU Mono G MK II Moving Coil Cartridge and Headshell

Ortofon SPU Mono GM MKII Cartridge

The Ortofon SPU Mono GM MKII is a dedicated mono cartridge designed to deliver an authentic playback experience for early vinyl recordings. Built around the classic SPU architecture, it faithfully reproduces the tonal character and energy of original mono pressings with impressive accuracy and musicality.

With a high output of 3mV, the SPU Mono GM MKII can be used directly with standard MM phono stages, removing the need for a moving coil transformer. This makes it a straightforward and effective solution for enjoying true mono playback within a wide range of systems.

The spherical stylus with a 25µm radius is specifically optimised for early mono groove formats, ensuring proper groove contact, stable tracking, and reduced record wear. The ground wood and resin composite body contributes to a natural, balanced sound while helping to control unwanted resonance.

Key Features:

• Dedicated mono cartridge for early vinyl records

• High output (3mV) – no MC transformer required

• Integrated headshell (GM type) for classic SPU mounting

• Spherical stylus optimised for mono groove dimensions

• Authentic tonal balance for vintage recordings

• Ground wood and resin body for resonance control

Technical Specifications:

• Output Voltage: 3 mV (at 1kHz, 5cm/sec)

• Frequency Response: 20 Hz – 15 kHz (+2/-1dB)

• Tracking Ability: > 70 µm (at 315Hz)

• Compliance (Dynamic, Lateral): 12 µm/mN

• Stylus Type: Spherical

• Stylus Radius: R 25 µm

• Tracking Force Range: 3.0 – 5.0 g

• Recommended Tracking Force: 3.5 g

• Tracking Angle: 20°

• Internal Impedance: 100Ω

• Recommended Load Impedance: 47kΩ

Build & Design:

• Cartridge Body: Ground Wood & Resin Composite

• Coil Wire: High Purity Copper (OFC)

• Colour: Shiny Black

• Weight: 30 g

What’s Included:

• Ortofon SPU Mono GM MKII Cartridge (integrated headshell)

• Documentation

Note: This product is available for in-store demonstration. Visit the Spinning Room showroom in Leeds to experience the SPU Mono GM MKII in person.