极致（Ultrasone）将于11月推出三款Performance系列耳机：Performance 840，860，880。
三款耳机均采用S-Logic Plus技术，封闭式结构。其中860使用40mm镀金单元，880使用40mm镀钛单元，840或为普通40mm单元。860、880在机身材料，灵敏度，频响范围上也与840略有不同，具体参数如下：
Performance 840:
- S-Logic™ PLUS technology
- Natural Surround Sound
- ULE technology
- MU metal shielding
- Reduced radiation according to ULE specifications
- Dynamic principle, closed back
- Frequency range 10–25,000 Hz
- Impedance 32 ohms
- Sound pressure (SPL) 96 dB
- Sound transducer 40mm
- PET membrane
- Magnet NdFeB
- Weight 274g (excluding cable)
Performance 860：
- S-Logic™ PLUS technology
- Natural Surround Sound
- ULE technology
- MU metal shielding
- Reduced radiation according to ULE specifications
- Dynamic principle, closed back
- Frequency range 7–35,000 Hz
- Impedance 32 ohms
- Sound pressure (SPL) 94 dB
- Sound transducer 40mm
- PET membrane, titanium-plated
- Magnet NdFeB
- Weight 274g (excluding cable)
Performance 880：
- S-Logic™ PLUS technology
- Natural Surround Sound
- ULE technology
- MU metal shielding
- Reduced radiation according to ULE specifications
- Dynamic principle, closed back
- Frequency range 7–35,000 Hz
- Impedance 32 ohms
- Sound pressure (SPL) 94 dB
- Sound transducer 40mm
- PET membrane, titanium-plated
- Magnet NdFeB
- Weight 274g (excluding cable)
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