Best For
Best for Gaming
JBL Tune 310C USB
Better Sound Quality
JBL Tune 310C USB
Best Value
JBL Tune 310C USB
Best for 3.5mm Devices
Sennheiser CX 80S
Best for Modern USB-C Phones
JBL Tune 310C USB
The Sennheiser CX 80S and JBL Tune 310C USB are both wired in-ear earphones, but they target different users. The Sennheiser CX 80S is designed for listeners who prefer a traditional 3.5mm headphone jack and balanced sound with passive noise isolation. The JBL Tune 310C USB, on the other hand, is built for modern USB-C devices and adds Hi-Res Audio certification, customizable EQ presets, and JBL's signature Pure Bass tuning. Choosing between them largely depends on your device compatibility, preferred sound profile, and everyday listening needs.
Verdict
The JBL Tune 310C USB is the stronger overall choice for most buyers thanks to its USB-C connectivity, Hi-Res Audio support, wider frequency response, customizable EQ presets, and better compatibility with modern smartphones, tablets, and laptops. The Sennheiser CX 80S remains an excellent option for users who still rely on a 3.5mm headphone jack and prefer Sennheiser's balanced audio signature with effective passive noise isolation.