• 3 switch positions, 4 tuning styles: To meet the needs of users with different listening styles, the ST1 Pro uses electronic crossover technology to design a three-position tuning switch that enables four tuning styles to be switched to meet the needs of different listening sensations and different scenarios
• The 4th generation dual magnet dynamic driver: The 4th generation 10mm dual magnet dynamic driver is specially developed to perform better than previous generations. Strong N52 magnet, together with nanotech composite diaphragm gives excellent resolution, a balanced across frequency spectrum and precise stereo imaging
• Semi-open back air vent design: ST1 Pro adopts a semi-open back design, which helps to achieve air pressure balance within the inner acoustics chamber, effectively relieving pressure on the eardrum. This allows full music enjoyment without discomfort. In addition, this unique design gives a livelier and airier sound to your favorite music
• Quality cable: ST1 Pro With audiophile-grade 4 core silver plated cable. Fine, full-bodied and rounded sound with full-resolution
• Ergonomically designed for your ears: Based on the human ears, the external shell is shaped for long-wearing without fatigue or irritation. Secure, over-the-ear design ensures earphones stay in place for unmatched comfort and sound isolation

Specifications:

• Product model: TRN-ST1 Pro
• Plug type: 3.5mm
• Earphone topography: Hybrid In-Ear Monitors
• Pin type: 2Pin (S)
• Sensitivity: 110dB
• Wearing method: Wrap-around ear
• Frequency range: 20Hz-20kHz
• Impedance: 28Ω
• Cable length: 1.25m+5cm (without microphone)
• Weight (single-sided earphone + cable): about 4.7g+12g