--- product_id: 72096674 title: "SP400 SquarePlug. World's smallest Angled 1/4\" Mono Jack Pancake Plug Connector" brand: "kmmk" price: "€ 24.72" currency: EUR in_stock: true reviews_count: 2 category: "Kmmk" url: https://www.desertcart.pt/products/72096674-sp400-squareplug-worlds-smallest-angled-1-4-mono-jack-pancake store_origin: PT region: Portugal --- # 20% smaller than Switchcraft 228 Ultra low profile: 8.3mm projection 2 solder tabs for quick soldering SP400 SquarePlug. World's smallest Angled 1/4" Mono Jack Pancake Plug Connector **Brand:** kmmk **Price:** € 24.72 **Availability:** βœ… In Stock ## Summary > 🎸 Plug in tight, play it right β€” the SP400 keeps your setup sleek and unstoppable! ## Quick Answers - **What is this?** SP400 SquarePlug. World's smallest Angled 1/4" Mono Jack Pancake Plug Connector by kmmk - **How much does it cost?** € 24.72 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/72096674-sp400-squareplug-worlds-smallest-angled-1-4-mono-jack-pancake) ## Best For - kmmk enthusiasts ## Why This Product - Trusted kmmk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** All-metal matte nickel finish offers durability and professional-grade reliability. - β€’ **Precision Fit:** Designed for cables 4-4.5mm diameter, ensuring a snug, reliable connection every time. - β€’ **Compact Powerhouse:** 20% smaller than the industry standard, perfect for dense pedalboards and rack setups. - β€’ **Space-Saving Marvel:** At just 8.3mm projection, fit more pedals and gear without the bulk. - β€’ **Effortless Installation:** Dual solder tabs make soldering and desoldering a breeze, saving you time. ## Overview The SquarePlug SP400 is the world’s smallest angled 1/4" mono jack soldered connector, boasting a 20% smaller footprint than the Switchcraft 228 and an ultra-low 8.3mm profile. Crafted with all-metal construction and dual solder tabs, it’s engineered for high-density pedalboards and rack systems, delivering professional reliability in a compact, space-saving design. ## Description SquarePlug SP400/500, designed and manufactured by kmmk solutions, is the smallest 1/4" soldered connector on the market. It is 20% smaller than the Switchcraft 228 and projects by only 8.3mm which is much less than any currently available soldered and solder-less connectors. What makes SP400 stands out though, is its ability [thanks to a super compact design] to be patched into adjacent and closely spaced socket configurations [like the ones found on floor and rack based switching systems] where no other right angled soldered plug can. With SquarePlug you get the performance and reliability of a soldered connector with virtually the same footprint of a solderless one! Review: These neat thin profile plugs save so much valuable space on a pedalboard! - Effects pedals with side jacks can be placed so much closer to one another using these plugs which is really handy when trying to cram as many pedals onto your pedal-board as you can. I just wish I had come across the sooner! They also look quite cool too. Review: Super slim for busy pedal boards - Easy to solder - super flat / slim construction so you can cram more stomps on your board - top stuff gonna buy me some more :) ## Features - This is the smallest 1/4" soldered connector on the market. It is 20% smaller than the Switchcraft 228 and projects by only 8.3mm - Ultra low profile connector [measures only 8.3mm / 0.326" x 17mm / 0.67" x 28mm / 1.10"] for highest packing density - 2 solder tabs for quick and easy soldering/desoldering - Designed to snug fit cables between 4 and 4.5mm in dia. (SP400) - All metal construction (matte nickel plating finish) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0798PLK5W | | Best Sellers Rank | 5,189 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 177 in Instrument Cables | | Brand | KMMK | | Cable Type | AUX | | Cable type | AUX | | Colour | Nickel | | Compatible Amazon Tablet Models | Amazon Fire 5th Generation | | Compatible Devices | Headphone, Music Player, Smartphone, Speaker, Tablet, computers | | Compatible Phone Models | Compatible with smartphones, specific models not listed | | Compatible devices | Headphone, Music Player, Smartphone, Speaker, Tablet, computers | | Compatible phone models | Compatible with smartphones, specific models not listed | | Connector Gender | Male-to-Female | | Connector Type | solder | | Connector type | solder | | Customer Package Type | sealed anti-static bag | | Customer Reviews | 4.2 out of 5 stars 5 Reviews | | Indoor Outdoor Usage | Indoor | | Item Length | 28 Millimetres | | Item Shape | Round | | Item Weight | 30 Grams | | Manufacturer | KMMK | | Manufacturer Part Number | SP400 | | Maximum Voltage | 5 Volts | | Model Name | SP400 | | Model Number | SP400 | | Number of Items | 1 | | Number of Pins | 3 | | Other Special Features of the Product | Super Compact Design, Patented Connector | | Outer Material | Metal | | Recommended Uses For Product | The SquarePlug SP400 is recommended for use in high-density setups, such as floor and rack-based switching systems, where space is limited. It is designed to connect cables between 4 and 4.5mm in diameter securely and reliably. | | Special feature | Super Compact Design, Patented Connector | | Specification Met | CE, RoHS | | Unit Count | 1.0 count | ## Product Details - **Brand:** KMMK - **Cable type:** AUX - **Compatible devices:** Headphone, Music Player, Smartphone, Speaker, Tablet, computers - **Connector type:** solder - **Special feature:** Super Compact Design, Patented Connector ## Images ![SP400 SquarePlug. World's smallest Angled 1/4" Mono Jack Pancake Plug Connector - Image 1](https://m.media-amazon.com/images/I/719G6IFQ0IL.jpg) ![SP400 SquarePlug. World's smallest Angled 1/4" Mono Jack Pancake Plug Connector - Image 2](https://m.media-amazon.com/images/I/610E4paQuSL.jpg) ## Questions & Answers **Q: Is this the price for one, a pair, or a pack?** A: It is the price for one connector ## Customer Reviews ### ⭐⭐⭐⭐⭐ These neat thin profile plugs save so much valuable space on a pedalboard! *by I***. on 18 February 2020* Effects pedals with side jacks can be placed so much closer to one another using these plugs which is really handy when trying to cram as many pedals onto your pedal-board as you can. I just wish I had come across the sooner! They also look quite cool too. ### ⭐⭐⭐⭐⭐ Super slim for busy pedal boards *by 0***2 on 12 November 2018* Easy to solder - super flat / slim construction so you can cram more stomps on your board - top stuff gonna buy me some more :) ## Frequently Bought Together - SP400 SquarePlug. World's smallest Angled 1/4" Mono Jack Pancake Plug Connector - Ernie Ball Not Even Slinky Nickel Wound Electric Guitar Strings - 12-56 Gauge - D'Addario Guitar Strings - XL Nickel Electric Guitar Strings - EXL120-7 - Perfect Intonation, Consistent Feel, Reliable Durability - For 7 String Guitars - 09-54 Super Light 7-String --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/72096674-sp400-squareplug-worlds-smallest-angled-1-4-mono-jack-pancake](https://www.desertcart.pt/products/72096674-sp400-squareplug-worlds-smallest-angled-1-4-mono-jack-pancake) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-07-07*