ORTOFON SPU GTX S

The Ortofon SPU GTX S represents the perfect blend of the musicality and rich tonal character that have defined Ortofon's SPU series for decades, combined with the latest innovations in audio technology.

This cartridge allows you to rediscover the rich, vintage warmth of vinyl, thanks to its spherical stylus. The spherical stylus, the most common stylus shape, features a rounded tip that contacts the groove walls of the record, offering a balanced and smooth sound.

The built-in MC transformer provides high output and low-noise performance, maintaining the classic audio fidelity typical of the SPU series.

The SPU GTX cartridges are hand-assembled by expert craftsmen in Denmark. Their unibody housings are molded in a single piece from a glass-fiber reinforced co-polymer, a material never before used for SPU cartridges. This ensures a stable, rigid, and low-resonance structure that houses the high-precision generator system. The bottom cover is made from the same innovative material, encasing the motor in a uniform design and material.

The SPU GTX S is a moving coil cartridge equipped with an integrated step-up transformer, a glass-fiber reinforced housing, and a spherical diamond stylus.

The SPU GTX series is designed to simplify installation without compromising sound quality. During the development of the GTX series, Ortofon chose to collaborate with Lundahl Transformers to design the new step-up transformers. Thanks to the integrated step-up transformer, these cartridges can be connected directly to any phono stage or amplifier with the same ease as a moving magnet cartridge, without the need for additional equipment.

Technical specifications:

• Channel balance at 1 kHz: 1.5 dB
• Output voltage at 1 kHz, 5 cm/sec: 4 mV
• Channel separation at 1 kHz: 20 dB
• Frequency response 20 Hz - 20 kHz: ±3 dB
• Tracking ability at 315 Hz: 60 μm
• Dynamic compliance, lateral: 10 μm/mN
• Stylus type: Spherical
• Stylus tip radius: r/R 8/18 μm
• Recommended tracking force: 4 g
• Tracking angle: 20°
• Internal impedance, DC resistance: 610 Ω
• Coil wire material: OFC
• Cartridge color: Black
• Cartridge weight: 38 g
• Recommended load capacitance: 150 – 600 pF