The ULTRASONE S-Logic® Plus technology is unique and innovative
ULTRASONE has developed unique S-Logic® natural surround sound and ultra-low emission technologies. ULTRASONE integrates safer listening aspects without neglecting the most advanced technologies. Considering all these aspects is essential for modern headphones.

S-Logic® natural surround sound - natural, 3-dimensional audio experience
S-Logic® Plus directly originates from innovations developed for top-model headphones. This sophisticated new technology combines precision damping with micro-acoustic amplification, allowing for the optimal complement of drivers and spatial parameters. Thus, the acoustically redesigned construction and fine-tuning of the new models result in the most refined audibility with the lifelike perception of sounds and instruments.

Humans use the outer ear and auricles to understand the three-dimensional space and to determine the direction and distance of sound. Instead of the musical information arriving directly into the inner ear, the S-Logic® signals are reflected off the outer ear from different directions before entering the auditory canal to create a natural three-dimensional sound. The S-Logic® is the only headphone system that incorporates the method of natural hearing sensation. S-Logic® enhances the enjoyment of listening to music. S-Logic® does not require artificial reverb or digital sound processing. S-Logic® not only creates natural surround sound but also allows the sound pressure level of the audio carrier to be reduced by up to 40% (3-4 dB) on the eardrum. This reduces the risk of hearing damage while ensuring fatigue-free music listening.

Most headphone drivers create a low-frequency magnetic field when converting an electrical signal into an acoustic signal, which we hear as music. ULTRASONE developed a special MU metal shielding, which we call ULE (Ultra Low Emissions), to reduce this radiation by up to 98% compared to traditional headphones. This technology passed the test of international review. ULTRASONE originally developed the ULE technology for professionals, as they spend half their lives in headphones. With the increase in consumer demand, the ULE health-preserving technology was included in every Ultrasone product.

Accurate, detailed audio reproduction is important for music listeners, whether it be for listening to music, watching movies, or gaming. The Ultrasone Performance 840, designed for home use, delivers convincing deep reproduction and provides peak performance under any circumstances.
The 40mm transducer produces sound in a highly accurate and detailed manner. Thanks to the enhanced bass range, it offers dynamic sound ideal for listening to music, watching movies, or computer environments, featuring accurate and vivid spatial information due to the patented S-Logic Plus technology.

The robust design allows the headphones to be worn for longer periods. The ear cushion padding is a special memory foam that adapts to the shape of the head, providing particularly comfortable, long-lasting wear and noise reduction. The wearing comfort is extremely high thanks to the very comfortable faux leather ear pads. The use of high-quality materials, ULE technology for shielding low-frequency fields, and the black-colored design make the Performance 840 a truly elegant sound equipment.