Table 1.

Comparison of Piphys features to several commercial and open source electrophysiology systems. Sampling Rate and Channels columns show the maximum numbers for all systems.

Platform	System Noise (μV RMS)	Sample Rate (kHz)	Channels	Cost (USD)	Cost per Channel	Open Source	IoT
Piphys	2.36 ± 0.4 †	15	32	$819	$48	Yes	Yes
Intsy [19]	6–8	2	64	$2,500	$39	Yes	No
Intan RHD ¶	3.21 ± 0.66 †	30	256	$10,295	$40	Yes	No
Open Ehpys [20, 41]	2.4 *	30	512	$15,545	$30	Yes	No
Willow [22]	3.9	30	1024	$20,480	$20	Yes	No
Axion Maestro Edge +	1.12 ± 0.18 †	12.5	384	$70,000	$182	No	No

^*Noise shown on Open Ephys website is the amplifier input noise for Intan RHD2132 bioamplifier chip, not the whole system noise.

^†RMS noise recorded experimentally.