The UPRO3V Earphones are designed to meet and satisfy the needs of musicians and entertainers. They allow a 26 dB isolation and return a clear sound, full-bodied and balanced, guaranteeing high dynamics typical of live concerts. UPRO3V Earphones are made with 3 Balanced Armature type receivers and with a cross-over integrated passive 3-way. The vented woofer boosts serious frequencies, reproducing deep and full-bodied basses. The crossover directs low frequencies to a receiver for bass frequencies, mid frequencies to a receiver for medium frequencies, while directing the high frequencies to a dedicated receiver treble. The UPRO3V Earphones take care of your ears, a 26dB isolation allows you to listen securely at a lower volume. They are compatible with wireless transmission systems and portable media devices.