Combined Guitar/Amp Monitoring Cable Ernie Ball’s P06411 instrument and headphone combo cable is a perfect solution for musicians that want to monitor their sound while they’re recording or performing. This PVC-covered cable hosts a single instrument cable, opposite of which rests a pair of 1/4-inch connectors. You’ll also have access to a headphone output, letting you plug any pair of 1/8-inch 'phones in to hear your sound as you play. Sweetwater guitarists have found that this cable hosts a variety of sonic options when it comes to building an instrument monitoring setup, all reflecting stunning Ernie Ball quality.
eBay