Grado Prestige Green4 - Black

Description

Flux-Bridger Moving-Iron Architecture

The Grado Prestige Green4 uses Joseph Grado's Flux-Bridger moving-iron principle, keeping the coil structure fixed while reducing the effective moving mass of the generating system. This approach pairs the swift transient response of a low-mass generator with the plug-and-play simplicity of a high-output cartridge. The die-injection-molded body supports consistent construction and long-term mechanical reliability.

5N OCC Copper Coils With Cryogenic Treatment

The Green4's internal signal path is built with ultra-high-purity 5N OCC copper, selected for its conductivity and consistency from unit to unit. The cartridge body undergoes cryogenic treatment and targeted internal damping to reduce unwanted mechanical resonances. This construction supports an average channel separation of 25 dB across the 10-30,000 Hz range for stable stereo imaging.

Bonded Elliptical Stylus on Aluminum Cantilever

The Green4 is equipped with a bonded elliptical diamond stylus mounted on an aluminum cantilever. The elliptical profile provides accurate groove-wall contact and stable tracking across a wide range of recordings. The stylus assembly is user-replaceable — and the same replacement stylus fits every Prestige series cartridge — for easy maintenance and step-up flexibility to Red4, Blue4, or Gold4 styli.

High Output and Broad System Compatibility

With a 4 mV output at 5 cm/s and a 10-to-47 kOhm working load, the Green4 pairs directly with the built-in MM phono stages found on integrated amplifiers and with standalone MM phono preamplifiers, with no step-up transformer required. Its body weighs 6 grams and fits standard 1/2" tonearm headshells. Rated frequency response runs from 10 to 55,000 Hz, with recommended tracking force between 1.6 and 1.9 grams.

Common Questions

Does the Green4 work with my amplifier?

Yes. With a 4 mV output at 5 cm/s and a 10-to-47 kOhm working load, the Green4 plugs directly into any moving-magnet (MM) phono input or preamplifier. No step-up transformer or dedicated MC stage is required.

What is the recommended tracking force?

Grado specifies a tracking force between 1.6 and 1.9 grams for the Prestige Green4. Setting the force accurately with a stylus gauge delivers a neutral frequency balance and stable tracking through complex passages.

Can I replace the stylus myself?

Yes — the Prestige series stylus assembly detaches easily and swaps in without removing the cartridge from the tonearm. Replacement styli are interchangeable across the Prestige models (Black, Green, Red, Blue, Gold), which is useful when stepping up without buying a new cartridge body.

How does the Green4 differ from the Red4 and Gold4?

All three cartridges share the same Flux-Bridger architecture, aluminum cantilever, bonded elliptical diamond, and die-injection-molded body. The difference is selection: the Green4 uses the standard-grade stylus, the Red4 uses a stylus graded for tighter channel symmetry, and the Gold4 gets the finest selection — stylus and mechanical components picked from the top of Prestige production. Measured specs (4 mV output, 10-47 kOhm load, 1.6-1.9 g tracking force, 10-55,000 Hz response) are identical across the three models. A Red4 or Gold4 replacement stylus can be fitted onto the Green4 body as an upgrade.

What's in the Box

Grado Prestige Green4 phono cartridge (standard 1/2" mount)

Removable stylus guard

Mounting hardware

Documentation