Specialized Tools for Electrophysiology and Cell Biology Research

(NL104A) AC Preamplifier

Product Summary

The NL-104A AC Preamplifier is a low noise, high input impedance, differential, preamplifier. It can be used alone for making recordings from low resistance (gross) electrodes, or with the NL-100AK headstage for microelectrode recordings.


  • A low noise, high input impedance, differential pre-amplifier
  • Can be used alone for making recordings from low resistance electrodes
  • Or used with the NL100AK headstage for microelectrode recordings

The NL-104A features a wide dynamic balance adjustment for asymmetrical inputs (useful for balancing interference and shock artifacts), a choice of two input time constants, 8 gain ranges and 3 high frequency filter settings. An internal 50 Hz oscillator is provided for precisely balancing the input (input switch in the CM position).

Gain 100, 200, 500, 1 k, 2 k, 5 k, 10 k or 20 k
Input Resistance 10 MO
High Frequency Cutoff Selectable for 100 Hz, 700 Hz, 6 kHz or W.B. (> 40 kHz)
Low Frequency Cutoff 0.1 Hz or 10 Hz
Common Mode Rejection 10,000:1 at 50 Hz
Rejection Ratio Input Noise < 10 µV (peak to peak) with inputs shorted to ground and bandwidth of 0.1 Hz to 10 kHz
Dynamic Balance Adjustment Gain for one input can be varied ±50% with respect to other
Output Voltage Range ± 12 V max.

Customers from Europe and Australia can use the Multi Channel Systems - Online Shop to order Warner products or create quotes.

Order No. Model No. Product Description USA Price Order
65-0224 NL104A AC Preamplifier Login Login

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