Grado Master 4 Phono Cartridge

The Grado Master 4 Phono Cartridge utilises Grado's patented flux-bridger moving iron generator housed within an American Osage wood body to deliver low effective tip mass and resonance-controlled tracking for discerning vinyl playback systems. Representing a significant technical benchmark among wooden phono cartridges, this transducer pairs a machined boron cantilever with a nude elliptical diamond stylus to trace complex vinyl grooves with clinical precision. Offered in both High Output and Low Output variants, it integrates seamlessly with conventional moving-magnet inputs as well as dedicated high-gain phono stages.The Hi-Fi Centre Team TakeLiving with the Grado Master 4 transforms everyday record spinning into an organic, fatigue-free musical session that encourages listening straight through entire album sides. The cured American Osage wood body imparts a grounded tonal weight to acoustic instruments and vocals without obscuring subtle micro-dynamics or ambient venue decay. Its moving iron mechanism navigates dense, highly modulated passages with calm composure, creating an expansive and stable soundstage suited for long evenings of deep musical immersion. It delivers the agility and low distortion expected of modern reference transducers while preserving the tactile warmth that makes vinyl playback permanently engaging.Key Acoustic & Design Features Machined Boron Cantilever: Employs a low-mass boron rod and five-piece OTL assembly to trace dynamic groove modulations with agility. American Osage Housing: Utilises dense domestic hardwood to naturally dampen internal mechanical resonances for an uncoloured acoustic output. Flux-Bridger Generator: Operates fixed ultra-high purity copper coils with minimal moving mass to ensure clean channel separation. Authorized Dealer Guarantee: Backed by Hi-Fi Centre as an Authorized Dealer, ensuring full factory warranty coverage and dedicated after-sales support. Technical Specifications Brand: Grado Labs Series: Timbre Series Model: Master 4 Transducer Type: Moving Iron (MI) / Flux-Bridger Body Material: Cured American Osage Wood Cantilever: Machined Boron (5-piece OTL) Stylus: Nude Elliptical Diamond Output Options: High Output (4.0 mV @ 5 CMV) / Low Output (1.0 mV @ 5 CMV) Frequency Response: 10 Hz – 60,000 Hz Channel Separation: Average 30 dB (10 Hz – 30,000 Hz) Inductance: High Output: 55 mH; Low Output: 6 mH Resistance: High Output: 660 Ω; Low Output: 70 Ω Recommended Input Load: 10,000 Ω – 47,000 Ω Cartridge Weight: 9.6 g Tracking Force Range: 1.6 g – 1.9 g Compliance: 20 μm/mN