The Pure Tone Mono & Stereo 1/4" Barrel Jack PTT5 is a new panel-mount jack that offers full contact for the best signal quality and the least noise possible. Its larger surface area at all contact points ensures a more stable connection, securing the cable in place and enhancing signal transmission. Consequently, both high and low frequencies are significantly improved, resulting in a more balanced sound and the elimination of frequency spikes. Most notably, the Pure Tone Jack is designed to eradicate the notorious "crackle" noise caused by pressure grounds.