Just randomly bought this TEC-05 extremely fast voltage and current clamp (V/C) amplifiers for studying large membrane currents. They are based on the standard two electrode approach.

TEC amplifiers are ideal systems for recording from invertebrate neurons, muscle cells and neuromuscular junction.

What is it? Who wants to do a session?

Here is the manual: http://www.npielectronic.de/fileadmin/files/Manuals/Amplifiers/TEC/TEC05_10CX_manual.pdf