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The SIRIUS is designed to fit the Performance series headphones exactly. It has a curved shape that nicely fits into the Performance 820, 840, 860 and 880 headphones seamlessly. You won't be able to tell that a SIRIUS module is docked onto the headphones. It has such a low weight that it doesn't add any bulk to your Ultrasone headphones. At just 12 grams your Performance headphones remain as comfortable to wear as ever.
We're serious, the Ultrasone SIRIUS is not just a Bluetooth adaptor. In its tiny housing, Ultrasone has managed to squeeze in a headphone amplifier. This amplifier's sole purpose is to give the Performance drivers the ultimate signal for an enthused listening session.
Compatibility: Ultrasone Performance 820, 840,860
Technology: Bluetooth 4.1, aptX
Bluetooth Profile: HFP, A2DP, HSP, AVRCP
Battery Lifetime: 8 to 12 Hours
Charging Time: 1 Hour
Max. Bluetooth Transmission Distance: 20 m
Buttons: Play/Pause, Volume
If you own an Ultrasone Pro series headphone, just absolutely do yourself a big favour and buy this.
1. Superb sound quality includes APTX support and even with my iphone with no APTX its impressively pristine and it goes way louder than ever needed
2. Perfect docking with Ultrasone Pro headphones
3. Great battery - impressed
4. Flawless pairing and streaming and no issues on distance for normal use whether phone is in pocket or many feet away
5. iPHones will show Battery level of the adapter on the device (have'nt checked on Android).
1. Looks like Plastic has just been discovered and its 1960. Crude buttons (but all buttons work fotunately). Fiddly buttons, crude machining
2. Properitary charging dongle - no micro USB type standard interface
All in all for something that clips under the headphones and with outstanding core performance. I'd buy it and force each of my friends who have the superb Ultrasone Pro series (I mean 820 here) to just not hold back due to the price and just press buy and let everything fade to music.
Still rating 4 as it just works and it sounds great!
It has so far been a wonderful experience using the sirius with my ultrasone performance 840. There are so many things to love about the sound. My 840 just sounds effortless now. The bass has more weight to it. Also there are details aplenty. Overall I am enjoying the sound signature. The AptX support just makes it better and using it with my pixel 2 has been a pleasure. Along with the Forza metallo wireless and Sony MDR 1000x, the performance 840 with sirius is one of my recent favorites. The battery life is decent and nothing great about it. But the sound alone is worth it.