Master4
Grado Udgået

Master4

The Master4 is a moving iron phono cartridge in Grado's Timbre Series, built in an American Osage wood body with a machined boron cantilever and nude elliptical diamond. It comes in high-output, low-output and mono builds for turntable owners.

  • Moving iron design with fixed coils
  • American Osage wood body
  • Nude elliptical diamond on machined boron cantilever
  • 6N OCC copper coils, cryogenically treated
  • High, low and mono output builds
  • Tracking force 1.6-1.9 g
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Beskrivelse

Master4 is a wood body moving iron cartridge from Grado's Timbre Series. It uses Joseph Grado's flux-bridger principle, which keeps the coils fixed and the moving mass very low. The stylus is a nude elliptical diamond on a machined boron cantilever.

The internal signal path uses 6N OCC copper. Each cartridge is cryogenically treated and internally damped to reduce resonance. The Osage wood housing is reshaped so the cantilever is easier to see during setup, which helps alignment and fits a wide range of tonearms.

It is made in high-output and low-output stereo versions, plus mono versions of each, so it can be matched to different phono stages. The specified input load is 10k-47k ohms and the response is not sensitive to capacitive load. Owners of other Grado wood body cartridges can ask the maker about an upgrade program with adjusted pricing.

Specifikationer

Mærke
Grado
Model
Master4
Kategori
DJ-udstyr › Pickupper og nåle

Cartridge

Type
Moving iron
Series
Timbre Series
Body
American Osage Wood
Cantilever
Machined Boron
Stylus
Nude Elliptical Diamond
Builds
High Output, Low Output, Mono

Electrical

Output (high)
4.0mV @5 CMV (45)
Output (low)
1.0mV @5 CMV (45)
Inductance (high output)
55mH
Inductance (low output)
6mH
Resistance (high output)
660 ohms
Resistance (low output)
70 ohms
Input load
10k-47k ohms
Capacitive load
Non-sensitive to capacitive load

Performance

Channel separation
Average 30db - 10-30k Hz
Controlled frequency response
10-60 KHz
Compliance
20μm/mN
Tracking force
1.6-1.9 grams

Physical

Cartridge weight
9.6 grams
Internal wiring
6N OCC copper

Data: gradolabs.com; fotos: Grado product page · opdateret 2026-10-12 · Fundet en fejl? Skriv til os