Master-9 AMPI
Master-9 AMPI

Master-9 AMPI

Category: Amplifiers, Stimulators, Data Acquisition, Electrophysiology

Master-9 is designed to meet a broad range of neurophysiological stimulation requirements.

  • 9 channels with repetitive, single, twin and train outputs.
  • Monophasic and biphasic pulses and ramp outputs.
  • NEW – Random interval times between pulses.
  • NEW – Download, save and deliver waveforms that you set in Excel files (up to 32K points).


  • NEW – Record external waveforms, save and deliver them.
  • NEW – Real time: Record the membrane potential and deliver the inverted potential (e.g. inverted action potential).
  • All channels can be operated independently or synchronized to produce complex patterns of pulses (paradigms).
  • Use some channels to stimulate your preparation, while other channels to trigger other instruments (oscilloscope, PC, etc.) in synchronization with the stimulation.
  • Wide range of time intervals between pulses/trains: from 40 μsec (25,000 PPS) to 3,999 sec (more than an hour)!


  • ΔV voltage steps, even in the case of biphasic pulses.
  • Modification on-the-fly: modify parameters without stopping the stimulation. For example, while stimulating, switch the stimulation rate from one range to another (e.g. from 98 PPS to 102 PPS).


  • Simple switch-off stimulation: important for cases where immediate stimulation cut off is required.
  • Scheduler: Use the powerful scheduler to trigger channels, modify parameters and switch between experiments at scheduled times.

A stand-alone stimulator that can also be programmed  via a PC.

  • As a stand-alone unit: All parameters are set by the front panel touch screen. You can easily switch between 9 stored independent experiments. Each experiment uses all channels.
  • When connected to a PC: You can set all parameters by the front panel touch screen or by your PC.
  • The PC can also modify Master-9 parameters in accordance withexperiment feedback and upload/download new experiments. The communication is bidirectional, through a standard USB interface.

Operating Modes
Each Master-9 channel can operate in any of the following modes:
Free-Run: The channel delivers repetitive pulses.
Trig: Single pulse after triggering (manually, internally from other channels, or externally).
Twin: Twin pulses after triggering.
Train: Train of pulses after triggering.
DC: The channel delivers a DC output independent of time settings.
Gate: Each time that an input signal is applied, the channel delivers repetitive pulses. Whenever the input signal stops, the channel stops operating.

Inter-Channel Connections
Each channel can be internally connected to any other channel with no need to connect wires between channels. Each channel can be internally connected to multiple channels simultaneously.

Voltage Range
Each channel delivers output pulses with amplitudes ranging from -10V to +10V, and with a maximum current of 20mA.

Combined Pulses
Three additional outputs deliver programmable combinations of  pulses.

Two Additional Clocks
In addition to its standard 8 channels, Master-9 features
2 internal clocks:
The first clock counts the time in seconds up to 24 hours and is used to measure the time elapsed from an event (for example, thebeginning of the experiment).
The second clock counts the time in tenths of a second up to 1 hour and is used to measure intermediate times.


Regulatory compliance: UL, ULC and CE
For research only - not approved for use on Humans

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KF Technology S.r.l. - Via A.Bocchi, 84 00125 Roma - tel. 06 45434179 - fax 06 97253131 - Cell. 339 5330322 - - P.IVA 07080681005

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