Sumiko Rainier Phono Cartridge Stylus

The RS Rainier — The Entry Point to a Range That Upgrades by Stylus

Sumiko's replacement stylus for the Rainier moving magnet cartridge, sold singly. An elliptical diamond measuring 0.3 by 0.7 mil on a 0.6 mm aluminum cantilever, it slides onto the front of the cartridge body.

The Rainier belongs to a group Sumiko designed to be upgraded one stylus at a time. Buy this and the body stays where it is; every better tip in the range fits the cartridge already aligned on your arm.

Fit, Profile and Compatibility

Which Bodies It Belongs On

Sumiko states it plainly: “Rainier, Olympia, Moonstone, Wellfleet and Amethyst use interchangeable stylus replacements,” and adds that “The cartridge bodies are identical with the exception of Amethyst, which uses an enhanced anatomy but remains compatible with the full range of styli.”

That is an unusually clean arrangement, and it is what makes the Rainier a sensible place to start rather than a compromise. The cartridge body you own today is the body every later stylus in the range will sit on, however far up you eventually go.

The Numbers That Matter at Setup

On a Rainier body Sumiko publishes 5.0 mV of output, a frequency response of 15 Hz – 20 kHz, 25 dB of channel separation, channel balance under 2 dB and compliance of 10 × 10⁻⁶ cm/dyn.

Tracking force runs 1.8 to 2.2 g with 2.0 g recommended, and load impedance is the usual 47 kΩ. Because the stylus is the variable in this range, resetting weight after a change is the one step that actually matters.

See It in Action

Who Is the RS Rainier Best For?

• Your Rainier is worn — a stylus costs a fraction of the cartridge and takes seconds to change
• You want the highest output in the group — 5.0 mV suits a phono stage that is short of gain
• You keep a spare for rough records — Sumiko suggests exactly that, and this is the sensible one to keep
• You own an Olympia, Moonstone, Wellfleet or Amethyst — the styli interchange, so this fits your body too
• Yours is an Oyster, Pearl or Black Pearl — those earlier cartridges sit outside this group and each takes its own stylus; their parts are in replacement styli

How Do You Fit It?

Leave the cartridge in the headshell. Grip the old stylus assembly by its plastic housing and pull it straight forward off the body, then press the new one on until it seats. Alignment is untouched, so set tracking force to 2.0 g and you are done.

Pairs Well With

What most Sumiko owners shop alongside a new stylus.

• Stylus force gauges — how you set the 2.0 g this one asks for
• Stylus cleaning — what decides how long the new tip lasts
• Record cleaning solutions — a clean record is the cheapest stylus insurance there is
• Record brushes — a pass before each side keeps grit out of the groove

Frequently Asked Questions

Will it fit my cartridge?

It fits the Rainier, Olympia, Moonstone, Wellfleet and Amethyst — Sumiko lists all five as taking interchangeable styli. The older Oyster, Pearl and Black Pearl each take their own.

Can I upgrade later without changing the cartridge?

That is how Sumiko built the range. Every stylus in the group fits this body, so a step up is a stylus purchase with no realignment and no new cartridge.

What tracking force should I set?

Sumiko specifies 1.8 to 2.2 g and recommends 2.0 g. Set it after fitting — the assemblies in this group do not all weigh the same.

How long does a stylus last?

Around 1,000 hours is the usual figure, though it turns on how clean your records are and how accurately the cartridge is set up. A worn tip damages records, so replace it on schedule rather than by ear.

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