Grado Opus 4 Phono Cartridge

The Grado Opus 4 phono cartridge is an analogue audio component engineered for vinyl enthusiasts seeking low mechanical resonance and natural harmonic presentation. Serving as the gateway to the Timbre Series, it houses a patented flux-bridger moving iron generator within a precision-machined North American maple enclosure. Available in High Output and Low Output configurations, the design delivers exceptionally low moving mass alongside wide phono preamplification compatibility.The Hi-Fi Centre Team TakeLiving with the Grado Opus 4 brings a tactile, organic richness to everyday record spinning that immediately sets it apart from typical synthetic cartridge bodies. It excels during focused evening sessions where acoustic jazz, orchestral movements, and intimate vocal pressings demand mid-band presence without fatiguing edge. The maple body naturally absorbs micro-vibrations, yielding a grounded soundstage that lets surface noise recede into the background. It is a deeply rewarding cartridge for listeners who prize musical flow and effortless texture over analytical sterility.Key Acoustic & Design Features American Maple Housing: Machined hardwood enclosure naturally damps unwanted internal resonances for a pure, uncoloured acoustic performance. Flux-Bridger Moving Iron: Fixed-coil architecture reduces effective moving mass to deliver swift transient response and stable tracking. Elliptical Diamond Stylus: Precision-mounted profile traces record grooves accurately to extract subtle harmonic detail across the frequency spectrum. Authorized Dealer Support: Purchased through Hi-Fi Centre as an Authorized Dealer, ensuring genuine manufacturer warranty coverage and dedicated audio guidance. Technical Specifications Brand & Model: Grado Labs Opus 4 (Timbre Series) Transducer Type: Moving Iron (Flux-Bridger) Body Material: North American Maple Wood Cantilever & Stylus: Aluminium Cantilever, Bonded Elliptical Diamond Output Configurations: High Output (4.0 mV @ 5 CMV) / Low Output (1.0 mV @ 5 CMV) Frequency Response: 10 Hz – 60,000 Hz Channel Separation: 30 dB average (10 Hz – 30,000 Hz) Tracking Force Range: 1.6 g – 1.9 g Compliance: 20 μm/mN Input Load: 10,000 – 47,000 Ohms (capacitive load non-sensitive) Internal Inductance: High Output: 55 mH; Low Output: 6 mH Internal Resistance: High Output: 660 Ohms; Low Output: 70 Ohms Cartridge Weight: 8.3 g