if you do upgrade to MMC2 with Axel, then you will not have to worry about the Rondel problems that can happen with both the MMC4 and MMC5 carts when played on new vinyl purchased
budget cartridges like the MMC4 and 5 have their stylii mounted on a small pedestal called a rondel, however when a diamond is mounted on the cantilever without a rondel (aka nude) it is much more resistant to poorly pressed vinyl, even premium 180g is guilty of this, and why you must carefully check both sides of any new record first
if there is any sign of poor pressing send it back with a photo of the fault to the supplier.
Pickups
MMC1
Description: Nude multi-radial Contact Line diamond mounted on a sapphire cantilever
Tracking force - grams: 1
Diamond Stylus: Contact Line Nude
Cantilever tube: Sapphire
Effective tip mass mg: 0,25
Compliance mg/mN: 30
Frequency 20-20000 Hz=/-dB: 1
Channel separation 1000>dB: 30
Output mV/cm/s RMS: 0,6
Cartridge weight gram: 1,6
MMC2
Description: Nude multi-radial Contact Line diamond mounted on a sapphire cantilever
Tracking force - grams: 1
Diamond Stylus: Contact Line Nude
Cantilever tube: Sapphire
Effective tip mass mg: 0,3
Compliance mg/mN: 30
Frequency 20-20000 Hz=/-dB: 1,5
Channel separation 1000>dB: 25
Output mV/cm/s RMS: 0,6
Cartridge weight gram: 1,6
MMC3
Description: Nude elliptical diamond mounted on tapered aluminium cantilever
Tracking force - grams: 1.2
Diamond Stylus: Elliptical nude
Cantilever tube: Tapered Aluminium
Effective tip mass mg: 0,35
Compliance mg/mN: 25
Frequency 20-20000 Hz=/-dB: 2
Channel separation 1000>dB: 25
Output mV/cm/s RMS: 0,6
Cartridge weight gram: 1,6
MMC4
Description: Titanium-bonded elliptical diamond on tapered aluminium cantilever
Tracking force - grams: 1.2
Diamond Stylus: Elliptical
Cantilever tube: Tapered Aliminium
Effective tip mass mg: 0,4
Compliance mg/mN: 25
Frequency 20-20000 Hz=/-dB: 2,5
Channel separation 1000>dB: 22
Output mV/cm/s RMS: 0,6
Cartridge weight gram: 1,6
MMC5
Description: Titanium-bonded elliptical diamond on a straight aluminium cantilever
Tracking force - grams: 1.5
Diamond Stylus: Elliptical
Cantilever tube: Straight Aluminium
Effective tip mass mg: 0,5
Compliance mg/mN: 20
Frequency 20-20000 Hz=/-dB: 3
Channel separation 1000>dB: 20
Output mV/cm/s RMS: 0,6
Cartridge weight gram: 1,6