[supermodio64]

Silver Surfer
These are my favorite headphones. Big thanks to Tekki-UK on eBay for all the support. Below is a review of each component:

Koss x Retrospekt Headband
The KPH40 style headband is durable, lightweight, and comfortable. It works with multiple Koss drivers.
https://retrospekt.com/products/koss-p-21-retro-foam-on-ear-headphones

Koss KSC75 Drivers
Known for exceptional clarity at an exceptionally low price. Perhaps the best value in audio.
https://koss.com/products/ksc75

Tekki 55mm Pad Adapters
These 3D printed rings snap around the KSC75 drivers so larger pads can be used.
https://www.ebay.com/itm/255698467840

Geekria Comfort Foam Grado Pads
Bigger pads that extend bass while maintaining clarity with a center hole cutout. Very soft and comfortable for hours.
https://a.co/d/iIo07Gm

Tekki MMCX Adapters
The 3D printed adapters hold connectors that allow use of any MMCX cable. They require soldering but it’s an easy job that’s safe for beginners.
https://www.ebay.com/itm/255686299985

XINHS 2 Core Silver Cable
A lightweight cable that looks amazing. This balanced 2.5mm variant connects to my Qudelix 5K Bluetooth DAC/AMP. Recommend boosting bass with the Qudelix EQ.
https://a.aliexpress.com/_mP3yPEa
https://a.co/d/eQelYAP

 

[supermodio64]

Please feel free to question, comment, or share your own custom Koss headphones. Thanks for your interest.

 

[supermodio64]

Phantom
A black and purple build of my favorite headphones. Thanks to Tekki-UK on eBay for the support. Below is a review of each component:

Drop + Koss KPH40X Headband
Durable, light, comfortable, and works with multiple Koss drivers.
https://drop.com/buy/drop-koss-kph40x-utility-headphones

Massdrop x Koss KSC75X Drivers
Exceptional clarity at an exceptionally low price.
https://drop.com/buy/massdrop-x-koss-ksc75x-on-ear-headphones

Tekki 55mm Pad Adapters
3D printed rings that snap onto KSC75 drivers for larger pad compatibility.
https://www.ebay.com/itm/255698467840

Geekria Comfort Foam Grado Pads
Larger pads that extend bass while maintaining clarity with a center hole cutout.
https://a.co/d/iIo07Gm

Tekki MMCX Adapters
3D printed adapters that allow connection of MMCX cables. The required soldering is easy and safe for beginners.
https://www.ebay.com/itm/255686299985

XINHS 8 Core Silver Cable
Purple with custom requested black hardware. This balanced 2.5mm variant connects to my Qudelix 5K Bluetooth DAC/AMP with bass boosted EQ.
https://a.aliexpress.com/_m0KvZpM
https://a.co/d/eQelYAP

 

[supermodio64]

Biscuits

So, you flipped your KSC75 drivers onto your KPH40 headband and love it. Naturally, you then swapped your KPH40 drivers onto your KSC75 ear clips and they’re fine. But, here’s the secret sauce - Chunky pads.

These $3 “Luxurious” eBay/Aliexpress pads from China are the chunkiest I could fit on the KSC75 ear clips. They’re roughly the same width as Yaxi pads but almost twice as thick. Fortunately, they’re also super squishy since you really have to squeeze your ears in. They might look ridiculous but they sound great.

The squeeze creates the seal that’s crucial for sound quality. These fatties really rumble. A fun side piece to the super tight KSC75. Could the KPH40/KSC75 be the best price-performance duo in the audio world?

https://www.ebay.com/itm/384362345268
https://a.aliexpress.com/_mrLSC6K

 

[supermodio64]

Gray Ghost
A gray and black build of my favorite headphones. Thanks to Tekki-UK on eBay for the support. Below is a review of each component:

Koss KPH40 Headband
Durable, light, comfortable, and works with multiple Koss drivers.
https://koss.com/collections/on-ear-headphones/products/kph40-utility

Massdrop x Koss KSC75X Drivers
Exceptional clarity at an exceptional price.
https://drop.com/buy/massdrop-x-koss-ksc75x-on-ear-headphones

Tekki 55mm Pad Adapters
3D printed rings that snap onto KSC75 drivers for large pad compatibility.
https://www.ebay.com/itm/255698467840

Geekria Comfort Foam Grado Pads
Large pads that extend bass while maintaining clarity with a center hole cutout.
https://a.co/d/iIo07Gm

Tekki MMCX Adapters
3D printed adapters that allow connection of MMCX cables. The required soldering is safe for beginners.
https://www.ebay.com/itm/255686299985

TRN T2 Pro 16 Core Silver Cable
Features interchangeable 2.5, 3.5, and 4.4mm plugs.
https://a.aliexpress.com/_mPIkzsC

Qudelix 5K Bluetooth DAC/AMP
Fun and flexible, a very unique device. Recommend boosting KSC75 bass with EQ.
https://a.co/d/eQelYAP

 

[tomb]

Impressive work!

 

[supermodio64]

Koss Combo #1
Serving up a Koss combo featuring the modded KSC75X “Gray Ghost” with a side of KPH40 “Biscuits.”

Gray Ghost

• Koss KPH40 Headband (Gray) - Durable, light, comfortable, and works with multiple Koss drivers.
• Massdrop x Koss KSC75X Drivers - Exceptional clarity at an exceptional price.
• Tekki 55mm Pad Adapters (Black) - 3D printed rings that snap onto KSC75 drivers for large pad compatibility.
• Geekria Comfort Foam Grado Pads - Large pads that extend bass while maintaining clarity with a center hole cutout.
• Tekki MMCX Adapters (Black) - 3D printed adapters that allow connection of MMCX cables.
• MMCX Cable Not Included - Recommend AliExpress for savings or Amazon for convenience.

Biscuits

• Massdrop x Koss KSC75X Ear Clips - A portable alternative to the standard headband.
• Koss KPH40 Drivers - Well balanced between the brighter KSC75 and the darker Porta Pro.
• Luxurious Pads - Thick squishy pads for a seal that boosts bass.
• Koss KPH40 Utility Cable - Lightweight, flat, and semi-interchangeable with a standard 3.5mm plug.

Price
Accepting offers starting at $150 within the US. Below is a cost breakdown:

• KPH40 + $40
• KSC75X + $25
• MMCX Adapters + $25
• Pad Adapters + $15
• Geekria Pads + $12
• Luxurious Pads + $3
• Labor + $20
• Shipping + $10
• Total = $150

Please contact me for further information and feel free to join our Reddit community at r/kossmods. Thanks for your interest.

 

[supermodio64]

Koss Combo #2
Serving up a Koss combo featuring the modded KSC75 “Silver Surfer” with a side of KPH40 “Biscuits.”

Silver Surfer

• Koss x Retrospekt Headband - Durable, light, comfortable, and works with multiple Koss drivers.
• Koss KSC75 Drivers - Exceptional clarity at an exceptional price.
• Tekki 55mm Pad Adapters (Clear) - 3D printed rings that snap onto KSC75 drivers for large pad compatibility.
• Geekria Comfort Foam Grado Pads - Large pads that extend bass while maintaining clarity with a center hole cutout.
• Tekki MMCX Adapters (Clear) - 3D printed adapters that allow connection of MMCX cables.
• MMCX Cable Not Included - Recommend AliExpress for savings or Amazon for convenience.

Biscuits

• Koss KSC75 Ear Clips - A portable alternative to the standard headband.
• Koss KPH40 Drivers - Well balanced between the brighter KSC75 and the darker Porta Pro.
• Luxurious Pads - Thick squishy pads for a seal that boosts bass.
• Koss KPH40 Utility Cable - Lightweight, flat, and semi-interchangeable with a standard 3.5mm plug.

Price
Accepting offers starting at $150 within the US. Below is a cost breakdown:

• KPH40 + $40
• KSC75 + $25
• MMCX Adapters + $25
• Pad Adapters + $15
• Geekria Pads + $12
• Luxurious Pads + $3
• Labor + $20
• Shipping + $10
• Total = $150

Please contact me for further information and feel free to join our Reddit community at r/kossmods. Thanks for your interest.

 

[supermodio64]

Koss Combo #3
Serving up a Koss combo featuring the modded KSC75X “Phantom” with a side of KPH40 “Biscuits.”

Phantom

• Drop + Koss KPH40X Headband - Durable, light, comfortable, and works with multiple Koss drivers.
• Massdrop x Koss KSC75X Drivers - Exceptional clarity at an exceptional price.
• Tekki 55mm Pad Adapters (Purple) - 3D printed rings that snap onto KSC75 drivers for large pad compatibility.
• Geekria Comfort Foam Grado Pads - Large pads that extend bass while maintaining clarity with a center hole cutout.
• Tekki MMCX Adapters (Purple) - 3D printed adapters that allow connection of MMCX cables.
• MMCX Cable Not Included - Recommend AliExpress for savings or Amazon for convenience.

Biscuits

• Massdrop x Koss KSC75X Ear Clips - A portable alternative to the standard headband.
• Drop + Koss KPH40X Drivers - Well balanced between the brighter KSC75 and the darker Porta Pro.
• Luxurious Pads - Thick squishy pads for a seal that boosts bass.
• Drop + Koss KPH40X Utility Cable - Lightweight, flat, and semi-interchangeable with a standard 3.5mm plug.

Price
Accepting offers starting at $150 within the US. Below is a cost breakdown:

• KPH40X + $40
• KSC75X + $25
• MMCX Adapters + $25
• Pad Adapters + $15
• Geekria Pads + $12
• Luxurious Pads + $3
• Labor + $20
• Shipping + $10
• Total = $150

Please contact me for further information and feel free to join our Reddit community at r/kossmods. Thanks for your interest.

 

[supermodio64]

Tekki Headband Extensions

These Tekki headband extensions attach to Koss KPH40/KPH40X Headphones to better distribute weight. Black and silver screws/nuts included. They’re available for $10 each while supply lasts.

Note: A heat source like a hairdryer is required to bend these to your head shape.

Please contact me with any questions and feel free to join the r/kossmods community on Reddit. Thanks for your interest.

 

[supermodio64]

Koss Combo #4
Serving up a Koss combo featuring the modded KSC75X “Super Modio” with a side of KPH40 “Biscuits.”

Super Modio

• Koss KPH40 Headband (Beige) - Durable, light, comfortable, and works with multiple Koss drivers.
• Massdrop x Koss KSC75X Drivers - Exceptional clarity at an exceptional price.
• Tekki 55mm Pad Adapters (Red/Blue) - 3D printed rings that snap onto KSC75 drivers for large pad compatibility.
• Geekria Comfort Foam Grado Pads - Large pads that extend bass while maintaining clarity with a center hole cutout.
• Tekki MMCX Adapters (Red/Blue) - 3D printed adapters that allow connection of MMCX cables.
• MMCX Cable Not Included - Recommend AliExpress for savings or Amazon for convenience.

Biscuits

• Massdrop x Koss KSC75X Ear Clips - A portable alternative to the standard headband.
• Koss KPH40 Drivers (Red/Blue) - Well balanced between the brighter KSC75 and the darker Porta Pro.
• Luxurious Pads - Thick squishy pads for a seal that boosts bass.
• Koss KPH40 Utility Cable - Lightweight, flat, and semi-interchangeable with a standard 3.5mm plug.

Price
Accepting offers starting at $150 within the US. Below is a cost breakdown:

• KPH40 + $40
• KSC75X + $25
• MMCX Adapters + $25
• Pad Adapters + $15
• Geekria Pads + $12
• Luxurious Pads + $3
• Labor + $20
• Shipping + $10
• Total = $150

Please contact me for further information and feel free to join our Reddit community at r/kossmods. Thanks for your interest.