Excellent working order and condition, includes original box ,papers and
brush
check pictures for details
The stylus is an elliptical naked diamond, radii 5x17u.
Recommended tracking force is 1g.
Each MMC 4000 is designed as an integrated unit.
This meant that all critical components were designed and constructed as an entity in order to give optimum performance.
The stylus unit is not separately replaceable as it was part of the integrated unit.
Frequency range was 20-30,000 Hz ± 3 dB. Effective tip mass was a mere 0.5 mg and compliance was higher than 30x10-6 cm/dyne.