The Dry Sensor Interface (DSI) series integrates QUASAR’s revolutionary dry electrode technology that acquires clean EEG signals, without the need for skin preparation or gels, and without compromising on signal quality. The DSI EEG signals are comparable to those obtained from wet electrode systems and are resistant to electrical and motion artifacts. The DSI wireless EEG headsets are designed for speed and ease of use, comfort, and mobility in real-world environments. This world leading dry electrode technology is revolutionizing EEG use in research, neurofeedback, brain-computer interfaces, neuromarketing and more.
At A Glance
DSI 24
The DSI-24 is a research-grade wireless dry electrode EEG headset designed for rapid application of 21 EEG sensors and 3 (optional) auxiliary sensors.
DSI 7
The DSI-7 is a research-grade wireless dry electrode EEG headset designed for ultra-rapid application. The DSI-7 offers practicality, portability…
DSI 7 Flex
The DSI-7-Flex is a research-grade wireless EEG system designed for versatile application of up to 7 sensors at any location. The DSI-7-Flex offers flexibility, portability…
DSI VR300
Developed in conjunction with Neurable the VR300 integrates an HTC Vive virtual reality headset with our DSI EEG System.
Full Comparison
Applications | DSI 24 | DSI 7 | DSI 7 Flex | VR300 |
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Neuroscience Research | ![]() |
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Neuromarketing | ![]() |
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BCI & Neurogaming | ![]() |
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Ergonomics & Biometrics | ![]() |
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Neurofeedback | ![]() |
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Custom Solutions | ![]() |
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Specifications | DSI 24 | DSI 7 | DSI 7 Flex | VR300 |
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Headset | Ideal for long-term ambulatory use in realworld environments | Ideal for ultra-rapid use in realworld environment. | Versatile user-selectable sensor locations under elastomeric cap or straps | Designed for integration with HTC Vive. Ideal for P300 in VR |
Sensor Locations | 21 sensors at International 10/20 System locations: Fp1, Fp2, Fz, F3, F4, F7, F8, Cz, C3, C4, T3, T4, T5, T6, Pz, P3, P4, O1, O2, A1 and A2; and 3 auxiliary channels for EMG, EOG, ECG | 7 sensors at the following International 10/20 System locations: F3, F4, C3, C4, Pz, P3, P4 + Linked Ears (optional location customization and ECG) | 2 – 6 dry sensors in individual pods + Linked Ears | 7 sensors at the following International 10/20 System locations: FCz, P3, Pz, P4, PO7, Oz, PO8 + Linked Ears |
Set-up Time | 3-5 Minutes | 1-3 Minutes | Variable | 1-3 Minutes |
Sensor Type |
Dry active hybrid Resistive/Capacitive, through hair and reusable
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Dry active hybrid Resistive/Capacitive, through hair and reusable | Dry active hybrid Resistive/Capacitive, through hair and reusable | Dry active hybrid Resistive/Capacitive, through hair and reusable |
Sampling Rate | 300 Hz | 300-600 Hz | 300-600 Hz | 300 Hz |
Triggers | 8 bit | 4 bit | 4 bit | 4 bit |
3D Accelerometer | Optional | Optional | Optional | Optional |
Communication Modes | Bluetooth Wireless and Wired USB Modes. Optional On-Board Storage | Bluetooth Wireless and Wired USB Modes. Optional On-Board Storage | Bluetooth Wireless and Wired USB Modes. Optional On-Board Storage | Bluetooth Wireless and Wired USB Modes. |
Bluetooth Range | 10m / 30feet | 10m / 30feet | 10m / 30feet | 10m / 30feet |
Included Software | DSI-Streamer Data Acquisition Software and API | DSI-Streamer Data Acquisition Software and API | DSI-Streamer Data Acquisition Software and API | DSI-Streamer Data Acquisition Software, API, and Unity and Unreal SDK for VR |
Ambulatory | Yes | Yes, With Stabilization Strap | Limited | Yes |
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