4x 1/4 TRS to TRS Female Audio Feed Thru connector Adapter for D Panel Mounting | eBay
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Switchcraft 131 1/4" Stereo Cable Mount Jack Female with Solder Contacts and Cable Clamp
Premium Stereo 1/4 Inch Male to Dual RCA Female Y Cable Adapter Splitter (8 Inch) - Male 6.35mm 1/4" TRS to Stereo 2RCA Female Connector Wire Cord Plug Jack - Walmart.com