Shure M3D is earliest ancestor of modern cartridge?

 

Shure cartridge w M3D needle for 45rpm

N21D 交換針 0.７mil 丸針 for Shure M3D M7D M8D 共用針

cartridge w M3D needle

Japan OEM M3D needle

這MM唱頭的結構要素，解決各唱頭製造商都在絞盡腦汁的唱頭音質個問題

my record

Jukeoxs Shure RM900E User Guide

https://kao211.blogspot.com/2023/02/jukeoxs-shure-rm900e-user-guide.html

Needle Stylus SHURE M44C N44C for jukebox

https://kao211.blogspot.com/search?q=Needle+Stylus+SHURE+M44C+N44C+for+jukebox

ORTOFON SPU Mono G

https://kao211.blogspot.com/2018/03/ortofon-spu-mono-g.html

                       Jukeboxs repair cartridge socket wiring

https://kao211.blogspot.com/2023/01/jukeboxs-repair-catridge-socketwiring.html

                     Jukeboxsss cartridge and Audio phono amplifier check

Shure N44 .7mil
https://kao211.blogspot.com/2023/09/cartridge.html