Squareplug SP400 Low Profile Plug (10 Pack)


Custom Shop

For custom lengths, colors, configurations, and more please contact us through our Custom Shop form

SquarePlug™ SP400 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!
- Ultra–low–profile connector [measures only 8.3mm  (0.326") Deep x 17mm (0.67") Wide x 28mm (1.10") Tall] for highest packing density
- Serviceable, all–metal plug designed to snug–fit smaller diameter cables (4 to 4.5mm) for optimum strain relief and improved emi protection
- 2 solder tabs for quick and easy soldering/desoldering
- Insulation sheet to prevent hot and ground signals from shorting

Customer Reviews

Based on 2 reviews
Rob Fristrom
DIY Plugs and Cable

I really like making my own custom length patch cables. Runway Audio's low impedance cable and the SP400 plugs have made a noticeable difference with noise, when compared to the pre-made patch cables from big name manufacturers that I previously used. Also, my soldering skills have improved quite a bit since I started to make my own patch cables!

Tim E McLaughlin

Small - Thin - Sexy and fits Mogami 2319 cable like a glove.
Converted several pancake and right angle plugs to these on my pedalboard and these freed up a lot of space for....more pedals! ;o)

Easy to solder and solid construction - Never going back to the other styles - The SP400 & Mogami 2319 is a beautiful match.

Not to mention these were shipped in a flash by Runway Audio - best price I found on the internet - Thanks a million!