HP40 - High Pass Filter

Marsoni

M251S

$139.00

Get it in 3 business days with 1 day shipping. Friday, May 29

HP40 - High Pass FilterThe HP40 is a high pass filter based around the SSI2140, the successor to the legendary SSM2040. The 2040 is the best sounding filter chip that came out of the 19070s and the 2140 takes the original design and adds CV controlled Resonance. The HP40 is a small format filter that does not cut corners. The Input is set up like the Dual SeM20, when the indicator line is straight up the input is at full, anything past that will over drive the input. The

Easy Shipping

Quick Dispatch:

Your HP40 - High Pass Filter orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your HP40 - High Pass Filter ships.

Need Help?
Questions about HP40 - High Pass Filter, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for HP40 - High Pass Filter in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I have them in every color and used to get them from Sams, but they stopped selling them and I was lucky to find them on Amazon. Got all colors again. They stay, it's all I'm gonna say! And don't show in any of my tennis shoes. Absolutely love them and wear them until they get holes. They last a LONG time too. They're on the thin side and my foot loves them because they tend to get hot. There's no shrinking, they wash great with exception of the white ones I couldn't manage to keep white - they turned a bit greyish.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on January 4, 2026

Verified Purchase

Christy F

Natrona Heights, US

★★★★★ 5

Great socks

Size: Medium, Color: Pink - 647

Well-made and comfortable to wear. Great for golf and other outdoor activities. Like them because they do not show above shoes.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 19, 2026

Verified Purchase

Cait E

Chelsea, US

★★★★★ 5

These ACTUALLY stay put all day long - I was skeptical, but am so glad I took a chance on these

Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock

I was so skeptical about whether these would stay on my feet all day without sliding down into my shoe - I’ve tried so many socks in the past with the silicone strip on the heel which failed. I’ve owned these for a couple months now and they have never slipped down - they stay put all day! I love the variety of colors to choose from, and the value per pack is great since six pairs come per pack (I thought it was only three when I first purchased and was pleasantly surprised by the additional pairs). They also have perfect thickness - not too warm to wear during the summer months with sneakers; I live in a tropical climate, though, so I’m not sure how they will do in cooler climates. I’ve washed each pair once or twice and the color and quality of the silicone has stayed so far (knock on wood). Overall: high recommend based on my experience so far!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 13, 2025