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The TRN ST1 Pro is a hybrid in-ear monitor with a 10mm dual magnet dynamic driver and a custom balanced armature, featuring a 3-position DIP switch for four tuning styles. It has a semi-open back design, 28Ω impedance, and comes with a 4-core silver-plated cable.
The TRN ST1 Pro is a budget-friendly wired in-ear monitor that pairs a 10mm dynamic driver with a hybrid configuration for a fuller soundstage. It offers a detachable cable, IPX4 sweat resistance, and physical buttons for control, making it a practical choice for listeners who prefer a traditional 3.5mm connection. At around $20, it aims to deliver solid performance without breaking the bank.
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
| Driver | 2-driver hybrid |
|---|---|
| Driver type | hybrid |
| Drivers per side | 2 |
| Frequency response | 20 Hz - 20 kHz |
| Impedance | 28 Ω |
| Sensitivity | 110 dB/mW |
| Driver | 2-driver hybrid |
|---|---|
| Driver type | hybrid |
| Drivers per side | 2 |
| Frequency response | 20 Hz - 20 kHz |
| Impedance | 28 Ω |
| Sensitivity | 110 dB/mW |
| Active noise cancelling | No |
|---|---|
| Controls | buttons |
| Voice assistant | No |
| Weight | 4.7 g |
|---|---|
| Water resistance | IPX4 |
| Detachable cable | Yes |
| USB-C | No |
| Connector | 3.5 mm |
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