CU80 case and plate foam set
Best acoustic upgrade for mechanical keyboard enthusiasts seeking a solid typing feel.
Elevate your mechanical keyboard experience with the CU80 case and plate foam set from StupidFish Designs. Tailored specifically for the CU80 keyboard, this set includes 4mm plate foam and 4mm case foam. These components are engineered to significantly reduce internal resonance and vibrations, leading to a more satisfying and solid typing feel. It's an ideal upgrade for keyboard enthusiasts seeking to fine-tune their acoustics and enhance the overall tactile feedback of their CU80 setup.
$28.00
Owner Satisfaction
4.7
/ 5
Category Rank
98
/ 1064
#98 in Input Device Accessories
Price vs Category Average
-14%
Below average
Compatibility
80
/ CU by Capsunlocked
Who it's for
- Audiophiles seeking a deeper, more refined typing sound
- Keyboard enthusiasts wanting a seamless, non-destructive installation
- Budget-conscious modders looking for high-impact acoustic upgrades
Who should skip it
- Beginners intimidated by complete keyboard disassembly
- Typists who prefer a crisp, loud, and undampened tactile feel
- Users living in humid climates concerned about long-term material durability
Performance breakdown
Acoustic Dampening
Effectively eliminates hollow pinging for a deeper, more refined sound profile.
Installation Simplicity
Precision-cut dimensions make the installation process straightforward and frustration-free.
Material Density
High-quality silicone provides the perfect balance of firmness and vibration absorption.
Typing Feel
Adds a subtle, satisfying resistance that improves overall tactile consistency.
Form Factor Precision
Tailored specifically for the CU80 chassis with zero clearance issues.
Resonance Control
Significantly minimizes internal echoes within the keyboard case cavity.
Key Specs
Compatibility
CU80 by Capsunlocked
Plate Foam Thickness
4mm
Case Foam Thickness
4mm
Material
Silicone
Switch Compatibility
Cherry MX Style
Stabilizer Compatibility
Cherry PCB Mount
Features
- Designed for CU80 keyboard
- Reduces keyboard resonance
- Improves typing feel
- Includes case and plate foam
- Enhances acoustics
- Easy keyboard upgrade
What customers say
The StupidFish Designs CU80 foam set is overwhelmingly praised as the best acoustic upgrade for the price. Customers consistently highlight the precision engineering, noting the perfect drop in fitment of both the case and plate foam pieces, which ensures easy installation. Acoustically, the set successfully reduces case hollowness and eliminates unwanted metallic pinging sounds common in aluminum cases. The resulting sound profile is described as satisfyingly muted and premium, often termed "thocky." While alternatives exist, this foam set is lauded for delivering maximum acoustic benefit within the CU80 chassis tolerances. It offers exceptional value, providing a professional sound solution at an accessible price, making it a near mandatory purchase for CU80 optimization.
Know before you buy
This set is specifically engineered for the CU80 by Capsunlocked. It is designed to fit the internal dimensions and layout of that specific model.
The 4mm plate foam is designed to sit between the plate and PCB, which can provide a slightly more cushioned bottom-out feel. It generally helps stabilize the typing experience without interfering with the mechanical function of your switches.
The foam is cut to accommodate Cherry PCB mount stabilizers. As long as you are using standard Cherry-style stabilizers, you should not need to make any physical modifications to your hardware.
Using both foams helps eliminate hollow sounds and internal vibrations within the keyboard chassis. The plate foam dampens noise at the source, while the case foam fills the empty space in the bottom of the housing to create a deeper, more solid acoustic profile.
Installation is straightforward and requires disassembling the keyboard case. You simply place the case foam in the bottom of the housing and the plate foam between the plate and the PCB before reassembling.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$28