Sonata4
Grado Discontinued

Sonata4

Sonata4 is a moving iron phono cartridge from Grado's Timbre Series, with a Mediterranean olive wood body and a nude elliptical diamond on an aluminum cantilever. It suits vinyl listeners who want a choice of high or low output, in stereo or mono.

  • Moving iron design based on the flux-bridger principle
  • Mediterranean olive wood body
  • Nude elliptical diamond on aluminum cantilever
  • High output 4.0 mV or low output 1.0 mV
  • Tracking force 1.6-1.9 g, weight 9.4 g
  • 6N OCC copper coils with cryogenic treatment
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Description

Sonata4 is a moving iron phono cartridge in the Timbre Series. It uses Joseph Grado's flux-bridger principle, in which the coils stay fixed and the moving mass is very low. The body is Mediterranean olive wood. The housing has been reshaped to give a clearer view of the cantilever during setup, which helps alignment and fits a wide range of tonearms.

The stylus is a nude elliptical diamond on a custom aluminum cantilever. The internal signal path is made from 6N OCC copper. Each cartridge is cryogenically treated and internally damped to reduce resonance. It is not sensitive to capacitive load.

It comes in stereo high output (4.0 mV) and low output (1.0 mV) versions, so it can be matched to different phono stages. Mono high and low output builds are available as special orders. Owners of other Grado wood body cartridges may be eligible for a pricing accommodation through the Wood Cartridge Upgrade Program.

Specifications

Brand
Grado
Model
Sonata4
Category
DJ gear › Cartridges and styli

Electrical

Output, high output
4.0mV @5 CMV (45)
Output, low output
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 sensitivity
Non-sensitive

Audio

Channel separation
Average 30db - 10-30k Hz
Controlled frequency response
10-60 KHz
Compliance
20μm/mN

Stylus and Construction

Body
Mediterranean Olive Wood
Cantilever
Special Aluminum/Elliptical Diamond
Generator design
Moving iron (flux-bridger principle)
Coil material
6N OCC copper

Setup

Tracking force
1.6-1.9 grams
Cartridge weight
9.4 grams

Versions

Builds
High Output, Low Output, Mono
Series
Timbre Series

Data: gradolabs.com; photos: Grado product page · updated 2026-10-12 · Found a mistake? Write to us