1. Introduction
The ISOtunes Sport INSTINCT provides advanced electronic hearing protection designed for environments with sudden loud noises, such as hunting and shooting ranges. It features Tactical Sound Control technology to enhance situational awareness while protecting against harmful sound levels. This manual provides essential information for the proper setup, operation, and maintenance of your device.
2. Safety Information
- Always ensure eartips are properly fitted to achieve the stated Noise Reduction Rating (NRR).
- The device is designed to suppress harmful noise levels above 85 dB using SafeMax technology.
- Tactical Sound Control amplifies ambient sounds for improved awareness, but will instantly reduce volume when loud impulses occur.
- Do not attempt to modify the device, as this may compromise its protective capabilities.
3. Package Contents
Verify that all items are present in your ISOtunes Sport INSTINCT package:
- ISOtunes Sport INSTINCT Earbuds (Left and Right)
- Protective Charging Case
- USB-C Charging Cable
- 1 Pair of Silicone Triple Flange Eartips
- 3 Pairs of Short Trilogy Foam Eartips (S, M, L)
- 3 Pairs of Tall Trilogy Foam Eartips (S, M, L)
- Short Lanyard

The image above displays the earbuds, charging case, USB-C cable, and the variety of eartips provided for a customized fit.
4. Setup
4.1 Eartip Selection and Fitting
Proper eartip selection and fit are crucial for optimal hearing protection and sound quality. Experiment with the included foam and silicone eartips to find the best seal and comfort for your ears.
- Foam Eartips: Provide a higher Noise Reduction Rating (NRR). Roll the foam eartip between your fingers to compress it, then insert it into your ear canal. Hold it in place for a few seconds while the foam expands to create a tight seal.
- Silicone Eartips: Offer a comfortable fit and are easy to clean. Insert directly into the ear canal until a snug fit is achieved.

The diagram illustrates the correct method for compressing and inserting foam eartips to ensure an effective seal.

A selection of foam and silicone eartips in various sizes is provided to ensure a personalized and secure fit.
4.2 Initial Charging
Before first use, fully charge the earbuds and the charging case. Connect the USB-C charging cable to the port on the case and a power source. The indicator lights on the case will show the charging status.
5. Operating Instructions
5.1 Power On/Off
The earbuds automatically power on when removed from the charging case and power off when placed back into the case.
5.2 Tactical Sound Control (TSC)
The INSTINCT features Tactical Sound Control, which amplifies ambient sounds up to a safe listening level (85 dB) while instantly suppressing sudden loud noises (e.g., gunshots) to protect your hearing. This allows for clear communication and environmental awareness without removing your hearing protection.

The graph demonstrates how the device amplifies sounds below 85 dB and suppresses sounds above 85 dB to prevent hearing damage.
5.3 Noise Reduction
The ISOtunes Sport INSTINCT provides 25 dB of certified noise reduction, ensuring your hearing is protected in loud environments. The device is designed without Bluetooth connectivity to help users remain focused and alert.

This image shows a user wearing the ISOtunes Sport INSTINCT earbuds, demonstrating their discreet and effective hearing protection during an activity.
6. Charging
The earbuds offer up to 13 hours of battery life on a single charge. The portable charging case provides two additional full charges, extending the total usage time. Use the provided USB-C cable to charge the case.

The image displays the earbuds securely placed within their charging case, ready for recharging.
7. Maintenance
The ISOtunes Sport INSTINCT earbuds are rated IP67, making them dust and waterproof. This ensures durability in various conditions. To clean, gently wipe the earbuds and eartips with a damp cloth. Ensure the charging contacts are dry before placing them back in the case.
8. Troubleshooting
- Reduced Noise Reduction: Ensure eartips are correctly sized and properly inserted to create a tight seal in the ear canal.
- Earbuds Not Charging: Check that the USB-C cable is securely connected to both the charging case and the power source. Ensure the earbuds are correctly seated in the charging case.
- Intermittent Sound: Verify that the earbuds are fully charged. If issues persist, ensure no debris is blocking the sound ports.
9. Specifications
| Feature | Specification |
|---|---|
| Noise Reduction Rating (NRR) | 25 dB |
| SafeMax Technology | Audio passthrough suppressed to 85 dB |
| Tactical Sound Control | Amplifies environmental sound, cuts harmful noise |
| Bluetooth | Not included (designed for focus) |
| Durability Rating | IP67 (dust and waterproof) |
| Battery Life (Earbuds) | Up to 13 hours |
| Battery Life (with Charging Case) | Additional 2 full charges |
| Charging Port | USB-C |
| Item Model Number | Instinct |
| Manufacturer | Haven Technologies, Inc. |
10. Warranty and Support
For warranty information and customer support, please refer to the official ISOtunes website or contact Haven Technologies, Inc. directly. Keep your proof of purchase for any warranty claims.





