Sumiko RS78 78rpm Replacement Stylus for Sumiko Oyster Series Cartridges

  • Sale
  • $ 129

Free standard shipping on all orders within the continental US.

The long-awaited RS 78 stylus for 78rpm discs is interchangeable with each of Sumiko's Next-Gen Oyster MM replacement styli — Rainier, Olympia & Moonstone — and it’s never been easier to switch over to shellac when you get the itch. It uses a 78-appropriate bonded 3mil spherical diamond with aluminum cantilever, tracks between 4.0 – 5.5g with a recommended VTF of 5.0g. To be as clear as possible, what we’re offering here is only the replacement stylus (the yellow piece), it is pictured both installed and uninstalled. This stylus requires a MM cartridge which is purchased separately. Please note that it is advised to not play 78rpm records with a diamond stylus. Meant to track the ‘microgrooves’ of 33s & 45s, it will sound poor and cause undue harm to the disc (and potentially damage the cartridge!). Sumiko has developed RS 78 for this very reason. The stylus tracks the grooves properly and reduces the risk of harm to your collection. Keep in mind that Rainier, Olympia & Moonstone are stereo MM phono cartridges, meaning that their normal job is to transcribe 2 channels (left and right) of musical information. When using RS 78 with any of these cartridges, what you’ll hear is the one channel of musical information (mono) of the 78 in both stereo channels. For audiophile purposes as it pertains to 78s, a true mono cartridge with a 78-appropriate stylus delivers the best sonics.


  • One channel cartridge
  • Interchangeable with Rainier, Olympia and Moonstone styli
  • 78rpm stylus for shellac records
  • easy installation

WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to



Sold Out