2M styli interchangeability 2M series styli are interchangeable within the below combinations: - 2M Red, 2M Blue and 2M Silver - 2M Bronze, 2M Black and 2M Black LVB 250 - 2M Mono and 2M 78 Special for 2M Red, 2M Blue and 2M Silver phono cartridges: - 2M Silver will be an upgrade compared to 2M Red due to a special suspension and silver plated copper wire material. - 2M Blue is an upgrade compared to both 2M Red and 2M Silver thanks to Nude Elliptical diamond which retrieves information from the groove with a higher accuracy.