64 Audio Aspire 4 Universal In-Ear Monitors headphone proprietary 2-pin TEAC-QVCS (Quad Volume Control System)

TEAC-QVCS (Quad Volume Control System) is used for the volume circuit

from powerful explosions to subtle footsteps

the amplifier which FET are installed in all stages

Enjoy JBL QuantumSPATIAL 360™ on Playstation and Nintendo Switch

Detailed and revealing yet unfatiguing sound

64 Audio Aspire 4 Universal In-Ear Monitors headphone proprietary 2-pin TEAC-QVCS (Quad Volume Control System)64 Audio Aspire 4 Four Driver In Ear Monitors Aspire Series Monitor your performance with 64 Audio's professional universal in ear monitors (UIEM) specifically designed for musicians and live music professionals. Whether you're just getting into monitoring with in ears, not ready for customs, need a backup set, or simply prefer generic fitting products Aspire Series offers best in class sound and ergonomics. World Class Sound With live music at the