Model 4100

Isolated High Power Stimulator (A-M Systems)

Highly versatile Stimulus Isolator.


Special offer:  20 % off - while stocks last


The A-M Systems Model 4100 is a powerful, flexible, and convenient single-channel stimulator.

Designed for a wide variety of applications, including field stimulation.

Powerful: ± 200 V pulses at 100 mA with duration from 1 µS to 25 hours

Flexible: Monophasic, Biphasic, Ramps, and User-Defined waveforms

Convenient: Front Panel controls, Windows, Apple, LabVIEW, MATLAB, and Android

The Model 4100 is your lab's Workhorse Stimulator, Delivering Maximum Performance at a Fair Price

The Model 4100 stimulator delivers stimulus trains comprised of monophasic, biphasic, and/or ramped waveforms. The Model 4100 can be programmed to deliver a variety of common protocols, including LTP/LTD stimulation studies, Paired Pulses protocols, and Stepped Pulse paradigms.


Comparison table

Features of Model 4100 Model 2100 Model 4100
User Interface
Front Panel Yes Yes
Windows (Win 7,8,10) No Yes
LabVIEW No Yes
iOS No Yes
OSx No Yes
Ethernet Addressable No Yes
Voltage Max: Monophasic 100 V 200 V
Voltage Max: Biphasic ±50 V ±200 V
Current Max 10 mA 100 mA
Minimum Duration 1 µS 1 µS
Maximum Duration 16 minutes 25 hours
Isolated Yes Yes
Offset Yes Yes
Hold No Yes
Stimulus Monitor No Yes
Train Features
By Time Yes Yes
By Frequency No Yes
By Count No Yes
Burst of Trains No Yes
Link Multiple Waveform Definitions No Yes
Event Features
By Time Yes Yes
By Frequency No Yes
By Count No Yes
Waveform Types
Monophasic Yes Yes
Biphasic–Symmetric Yes Yes
Biphasic–Asymmetric No Yes
Biphasic–Symmetric w/ Interphase No Yes
Biphasic–Asymmetric w/ Interphase No Yes
Ramp No Yes
Triangle No Yes
Trapezoidal No Yes
Free Yes Yes
Momentary Yes Yes
TTL Yes Yes
USB No Yes
Ethernet No Yes
Sync Output Choices 3 9
Auto Settings Yes Yes
Memory No Yes
Error Messages Yes Yes
External Signal-In Isolation
(Act as Isolator Only) No Yes


Software control

The A-M Systems multi-platform software controls all Model 4100 functions, and takes full advantage of today’s operating systems to make implementing your research protocols easy and straightforward.

Common "pinch and spread" touchscreen gestures can be used to change waveform timing and amplitudes; Dragging waveform icons can quickly rearrange the stimulus pattern delivered during a train.

Error messages as well as status messages are clearly displayed.

Multiple instrument programs can be stored on your computer to enable users with different protocols to preserve their settings and quickly import previously used values.

The Train Definition Screen


The Event Definition Screen