At least 1MS/s

WS4 DIFF
Wifi Oscilloscope 4-Ch Differential, 12-bit, 50MS/s
- 4 Input Channels Differential
- up to 50 MS/s A/D
XMC-16AI32SSC1M
32-Channel, Differential, 16-Bit Simultaneous, 1MS/s XMC
- 32 Differential analog inputs with dedicated 1.0MSPS 16-Bit ADC