TFZ Series 1S improves on the original TFZ Series 1 by adopting a braided cable instead of TPU rubber. Furthermore, the resolution and soundstage of the Series 1S has improved compared to the Series 1.

Features
– Model Number: TFZ SERIES 1S
– Driver: 12.5mm Titanium Crystal Dual Loop Dynamic Dual Chamber (N50)
– Impedance: 12ohm
– Sensitivity: 103dB/mW
– Frequency Response: 18Hz-22 kHz
– Style: In-Ear
– Plug Type: Line
– Connectors: 3.5mm
– Mic: No
– Lowest Power: 8MW
– Interface: 3.5mm Giled
– Cable length: 1.2M