Ultrasone SIRIUS Bluetooth Adapter for Ultrasone Headphones - Discontinued power supply front and rear anti-resonance effect

front and rear anti-resonance effect is better

All-New Driver Tech

iDSD Valkyrie

Watch videos and play games with low latency

The comfort only improves over time as the heat activated foam warms up and expands slightly

Ultrasone SIRIUS Bluetooth Adapter for Ultrasone Headphones - Discontinued power supply front and rear anti-resonance effectThe Ultrasone SIRIUS is a Bluetooth adapter designed for the Performance Series headphones including the 820, 840, 860, and 880. The adapter is curve shaped to cling precisely to the shape of the headphone and attaches to the cable input on the earcup. With a weight of only 12 grams, the adapter is inconspicuous and comfortable to wear. The Bluetooth technology incorporates the aptX codec for high quality, lossless audio streaming. Specially adapted