Buying Guide: Prosumer EEG for Developers

For startups, indie developers, students, and hobbyists. 7 devices compared.

Device Comparison

Device	Channels	Electrode	Sampling Rate	Price	SDK Support
Ganglion OpenBCI	4 Low-cost entry board	varies	200 Hz	$200–$400	LSLBrainFlowUnity
Muse 2 Interaxon	4 4 EEG channels (AF7, AF8, TP9, TP10) + PPG + accelerometer	dry	256 Hz	$250–$350	LSLBrainFlow
INSIGHT EMOTIV	5 5 channels + 2 reference	semi-dry	128 Hz	$299–$499	LSLBrainFlowUnity
Muse S (Gen 2) Interaxon	4 Same 4 EEG as Muse 2; fabric headband for sleep	dry	256 Hz	$350–$450	LSLBrainFlow
Crown Neurosity	8 8 channels; CP3, C3, F5, PO3, PO4, F6, C4, CP4	dry	256 Hz	$799–$999	BrainFlow
EPOC X EMOTIV	14 14 channels + 2 reference; saline-based semi-dry	semi-dry	256 Hz	$849–$999	LSLBrainFlowUnity
Cyton + Ultracortex Mark IV OpenBCI	8 Expandable to 16 with Daisy module	dry	250 Hz	$1,000–$2,500	LSLBrainFlowUnity

SDK quality over channel count. A 4-channel device with BrainFlow + LSL + Unity support ships products faster than a 14-channel device locked behind a proprietary API. Check SDK language support for your stack.
Electrode type determines iteration speed. Dry electrodes (OpenBCI, Neurosity) let you prototype in seconds. Semi-dry (EMOTIV) balances signal and speed. Avoid wet gel for rapid dev cycles.
BrainFlow compatibility. BrainFlow provides a unified API across devices in Python, C++, C#, Java, and JS. If your device supports it, you can swap hardware without rewriting code.
Battery life for demos. Presenting at a hackathon or investor pitch? EMOTIV Insight (8h) and Neurosity Crown (8h) outlast Muse 2 (5h). Factor in setup time too.
Community and documentation. OpenBCI has the largest open-source community. EMOTIV has the most polished commercial docs. Muse benefits from the meditation/wellness ecosystem. Pick based on your use case.

Entry point -- learn EEG basics, simple BCI experiments

Solid dev kits -- neurofeedback apps, game controllers

Prosumer research -- publishable data, SDK-rich ecosystems