Kailh Deep Sea Switches (Review & Sound Test)

kailh deep sea sound test and review

Sometimes, mechanical keyboards can be a bit too loud…even for those of us who enjoy the clacky & thocky!

And while they do make “silent” switches, they generally feel mushier and NOT satisfying!

Well, not anymore 😉

Below is my thorough review & sound test for the Kailh Deep Sea Silent linear switches!

Overall Takeaway: The Kailh Deep Sea switches use a unique sound-dampening mechanism that’s different than any other silent switch I’ve tried. This leads to a muted sound, but with just enough character to give a pleasant “crackly and thocky” sound. They feel stiff but fast, and not mushy at all. Personally, I think these are my favorite silent switch of all time.

I’ve tried Cherry MX Silent Reds, the VSii silent switches, and way more–and the Kailh Deep Seas are EASILY my favorite of the bunch.

Let’s dive into the details 👇

Here are some related switch reviews:

Kailh Deep Sea Sound Test:

Although they’re definitely more silent than traditional switches, I love that they still have a bit of character through that (especially the space bar).

Kailh Deep Sea V3 Switch Details:

Here’s a bit more about Version 3 of the Kailh Deep Seas:

TypeLinear (silent). A smooth keypress all the way down and back up
Operating Force45g (light-medium resistance)
Travel Distance1.8mm pre-travel (normal) and 3.6mm total travel (normal).
PriceAround $0.85 per switch, available on Amazon and Switch Captain (who also provides a beautiful tin)
SoundMuted and crackly (and a bit thocky)
FeelBalanced. Fast but stiff.

Here’s the official spec sheet from Kailh:

The older version of the Deep Seas (V1 linear Jellyfish & V2 Deep Sea) had different materials for the housing (nylon), and a few small “errors” that lead to scratchiness. The Deep Sea V3 is made with complete retooling, and has upgraded materials, including composite gold contact leaves.

Here’s what makes the Kailh Deep Seas different:

  • First, the way they dampen sound is different (and better) than other silent switches
  • They feature a clear “LED Window” that lets RGB shine through more
  • They’re a Kailh Box Switch, meaning there’s a tiny compartment inside the switch (where the copper/gold contact leaves are), as well as a circular-shaped stem that helps with dust and waterproofing!

You can read more about Kailh Box switches in this post.

The shape of the stem is supposed to make the keypress a bit more smooth, though the difference is small.

Kailh Deep Sea Sound Dampening

Most silent switches use a tiny material that attaches to the stem–and mutes sound on the keypress.

The Kailh Deep Seas take a different approach!

They have a small layer of sound-dampening material in the bottom housing, as well as tiny pieces of sound-dampening materials tucked away inside the top housing.

kailh deep sea sound dampening

In my personal opinion, this leads to a MUCH better sound.

The sound level is technically measured (by Kailh) as ≤ 35db, which is perfect if you’re looking for a mechanical keyboard that won’t disturb others around you.

deep sea ocean silent switch

Kailh Deep Sea Pricing

Compared to most other Kailh switches, the Deep Seas are on the “premium” pricing side, coming in around $0.85 per switch, or about $75 for a pack of 90 ($60 for a pack of 70).

However, that’s still cheaper than other silent switches!

  • Cherry MX Silent Red: $1.00 per switch
  • Boba U4 Silent Switches: $0.80 (if you can find them in stock anywhere!)

And since I personally prefer the sound and feel of the Deep Seas over any other silent switch, I think they’re definitely worth the price.

Deep Sea: Pros and Cons

PROS ✅

  • They are muted and soft
  • A satisfying crackly & thocky sound
  • A well balanced feel (see below)
  • Decent price point (compared to other silent switches)
  • IP54 dustproof and water-resistant

CONS ❌

  • A tiny amount of “spring ping” (see below)
  • More expensive than traditional switches
  • Some people prefer louder switches

Kailh Deep Sea Ocean Sound & Feel

After typing on these switches for a while, here’s a bit more about their performance!

Sound

  • Soft
  • Crackly
  • Thocky
  • The space bar is even more thocky and a bit louder

Honestly, these are the best-sounding silent switches I’ve used.

They have a good mix of thock and crackle, without being too loud.

And the space bar is actually one of my favorite parts–it reminds you that you’re typing on a mechanical keyboard (by being just slightly louder than it should be).

Feel

  • Fast
  • Stiff
  • Balanced

The VERY light 45g actuation force leads these to feel “short and fast,” but in a good way. They still feel a bit stiff though, which I think might be related to the sound-dampening components, as well as the circular stem design (which is probably heavier than a normal stem?)

But they don’t feel mushy, and that’s key!

They feel balanced and smooth.

Alternatives to the Kailh Deep Sea Oceans

Here are the other silent switches I’ve tried (and can generally recommend):

Cherry MX Silent Red (linear)

Cherry Reds are the gold standard linear switch, and silent reds are probably the most popular silent switch.

But in my experience, they feel mushy and too light.

They have the traditional integrated padding on the stem (which is the sound absorption)

Cherry MX Silent Black (linear)

Same as the Cherry Silent Reds, except heavier and deeper in sound.

Personally, I think the “mushy” feeling of silent switches is less pronounced in the Black switches (but still not as nice as the Kailh Deep Seas in my opinion)!

Gateron Ink Black V2 (linear, not silent)

Technically, the Ink Blacks aren’t silent–but they’re SO deep, heavy, and smooth that I felt the need to mention them!

They’re one of the quietest “non-silent” switches I’ve tried. So if you’re after buttery smooth and don’t mind a BIT of noise, the Gateron Ink Blacks are one of the thocky-est switches you can get!

Read our full review of the Gateron Ink Blacks here.

ZealPC Zilent V2 Switches (tactile)

Zeal PC produces one of the more popular tactile switches of all time (Zealios), and this is the silent version of that!

It is a TACTILE switch, meaning there’s a small bump in the keypress that lets’ your fingers know they’ve actuated the switch.

The great thing about the Zilents is that you can choose how heavy you want the resistance! They range from 62g to 78g in operating force.

If you’d like to feel a tactile bump but want silent switches, the Zilents are my recommendation!

Gazzew Boba U4 Silents (tactile)

The Boba U4 is the silent version of the Boba U4T (another massively popular tactile switch).

These are hard to find in stock anywhere, but they’re similar to the Zealios in terms of feel (tactile, with a small bump).

I don’t think the silent tactiles are quite as muted as the silent linears–and definitely not as mushy feeling as the Cherry MX Reds or Blacks!

What is the quietest Kailh switch?

Although Kailh makes several different silent switches, the Kailh Deep Sea (silent linear) switches are likely the quietest. They have a tested loudness rating of ≤ 35db, and feature a different mechanism for absorbing sound than other silent switches. They have a layer of material inside the bottom housing (as opposed to pads on the stem), as well as tiny pieces of material tucked away in the top housing to further dampen sound.

Bottom Line: Should you buy the Kailh Deep Sea Ocean switches?

If you’re looking to dampen the sound of your mechanical keyboard, then I think the Kailh Deep Seas are a great choice!

They’re some of the best-sounding silent switches I’ve used, and they don’t sacrifice too much in terms of feel or quality.

And yeah, they’re slightly more expensive than some of the alternatives–but I think they’re worth it 100%.

Click here to purchase the Kailh Deep Seas on SwitchCaptain (my favorite provider).

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