New, sealed in the Box! The Sonos ACE ACEG1US1BLK Black Headphones are high-quality over-the-ear headphones designed for studio monitoring, DJing, and live monitoring. With a frequency range of 20 Hz to 20 kHz and 40mm drivers, these headphones deliver clear and precise sound for professional use. They feature active noise cancellation, wireless Bluetooth connectivity, and an adjustable headband for a comfortable fit. The built-in microphone, volume control, and built-in on/off switch offer added convenience. Additionally, the ambient sound mode allows for monitoring your surroundings while maintaining high-quality sound. The sleek black design and modern features make these headphones a top choice for audio professionals.