Amazon.com: TRS Socket,Stereo 3-Conductor Input Jack, 1/4", TRS Panel Mount Socket with Washer and Nut Solder Type for Guitar Pedals Bass Fender Footswitch and Any Other Applications with 6.35mm(4Pack) HUASEN : Musical
Cliff British Style Input Jack - StewMac
PEAVEY 1/4" 6.35mm STEREO INPUT JACK HIGH DEFINITION - PLASTIC BUSHING
Switchcraft Stereo Long Threaded Barrel Input/Output Jack - Gold - Philadelphia Luthier Tools & Supplies, LLC
Audio Jack 3.5mm - PRT-08032 - SparkFun Electronics
Guitar Input Jack 1/4" Stereo Jack Mono Panel Mount Socket Silver for Guitar Bass Speaker Footswitch - Walmart.com
1/4" Audio Jack - Slim Stereo PCB Mount - Griffin Effects
Adafruit TRRS Jack Breakout Board : ID 5764 : $1.75 : Adafruit Industries, Unique & fun DIY electronics and kits