Amplifiers i.e. for sharp electrode recording (i.e. in oocytes)

Voltage Clamp (Sharp Electrode) Amplifiers

npi SEC Series

High Speed Precision Time-Sharing Single Electrode ...

npi Turbo TEC Series

Amplifiers for studying large membrane currents

HEKA iTEV 90

Multi-Electrode Clamp Amplifier

Axoclamp 900A

Microelectrode Amplifier for Current and Voltage Clamp

Physiologic Instruments VCC 600

Voltage-Current Clamp Amplifier for Epithelial Tissues

Dagan BVC-700A

Whole Cell Clamp; Bridge & Voltage Clamp Amplifier