BrainAmp series

Logo BrainAmps
  • High-end amplifier solutions for laboratory EEG recordings

  • Up to 256 channels: Stackable 32 channel units

  • Expandable with the BrainAmp ExG for bipolar and sensor data acquisition

  • Full compatibility with all our active and passive electrode systems

BrainAmp: High quality solutions for neurophysiology recordings
BrainAmpsProven technical features (BrainAmp DC)
    • Sampling rate: 5 kHz per channel
    • Input noise: ≤ 1 μVpp
    • Common-mode rejection (CMR): ≥ 110 dB
    • Triggering: 16 bit TTL trigger input to detect markers from visual, accoustic, electrical, magnetic or other stimulation modalities
Powered by lead gel technology (the PowerPack)
    • Fully eliminates 50/60 Hz mains noise originating from power supplies, ensuring highest quality EEG/ERP recordings
    • Can be used for continuous acquisitions of up to 30 hours and allows for more than 1000 recharging cycles
    • Labeled “MR conditional” and therefore suitable for safe EEG recordings in the MR scanner
Flexibility
    • Several 32 channel units can be stacked to expand the number of channels up to 256
    • Can be used in combination with easy to prepare active electrodes (actiCAP slim/snap) for best data quality as well as gel-based passive electrodes (BrainCap)
    • Also compatible with passive sponge-based electrodes (R-Net) or active dry electrodes (actiCAP Xpress Twist) when quick preparation times are crucial
    • Can be powered via battery (PowerPack) or Mains Power Supply
Expandability

The EEG amplifier systems can be combined with the BrainAmp ExG to add the capability to record bipolar and peripheral signals, such as EOG, ECG, EMG, GSR/EDA, Respiration, Acceleration, etc.) in an extremely compact setup.

 Integrated for multimodal recordings
BrainAmp Standard
    • Only offers AC recording mode
    • Comes with amplifier, battery (PowerPack), USB2 Adapter/BUA (connection to computer), electrode input box (EIB), Signaltester, all required cabling and a time-limited trial version of all our software solutions for signal recording and analysis
BrainAmp DC
    • Includes all features of the BrainAmp Standard with the addition of a DC recording mode and multiple hardware filtering options. The amplifier setup is fully controllable via the recording software. It is also possible to switch from DC to AC recording mode as well as to select different hardware bandwidths with just one “click” in the software.
    • Comes with amplifier, battery (PowerPack), USB2 Adapter/BUA (connection to computer), electrode input box (EIB), Signaltester, all required cabling and a time-limited trial version of all our software solutions for signal recording and analysis
BrainAmp ExG
    • Bipolar 16 channel amplifier to record EOG, ECG, EMG and other peripheral signals such as GSR (Galvanic Skin Response), respiration, acceleration, etc. in the lab environment
    • Based on the same technology as BrainAmp Standard and DC
    • Available as an extension or stand-alone system
    • Comes with amplifier, battery (PowerPack), USB2 Adapter/BUA (connection to computer), AUX box (connection of sensors), Signaltester and all required cabling
AmplifiersStandardDCExG
Number of channels (per unit)323216 bipolar
Channel type / referenceReferential channels/acquisition of a reference using a single electrode (unipolar)Referential channels/acquisition of a reference using a single electrode (unipolar)8 bipolar + 8 AUX by means of ExG AUX Box
Input impedance10 MΩ (for DC)Switchable: 10 MΩ / 10 GΩ (for DC)10 MΩ (for DC)
Input noise≤ 2 μVpp≤ 1 μVpp≤ 2 μVpp
Common-mode rejection (CMR)≥ 90 dB≥ 110 dB≥ 100 dB
Lower cutoff frequency (high pass)0.016 Hz/10 s0 Hz in DC mode or 0.016 Hz/10 s in AC mode;
switchable between AC and DC modes
0 Hz in DC mode or 0.016 Hz/10 s in AC mode;
switchable between AC and DC modes
Filter typeFirst-order filter with 6 dB/octaveFirst-order filter with 6 dB/octaveFirst-order filter with 6 dB/octave
High-cutoff frequency (low-pass)/time constant1,000 Hz1,000 Hz / 250 Hz (switchable for the resolutions 0.1 μV / 0.5 μV per bit)1,000 Hz / 250 Hz (switchable for the resolutions 0.1 μV / 0.5 μV per bit)
Filter typeFifth-order Butterworth filter with 30 dB/octaveFifth-order Butterworth filter with 30 dB/octaveFifth-order Butterworth filter with 30 dB/octave
Measuring range±3.28 mV±3.28 mV / ±16.384 mV (switchable)±3.28 mV / ±16.384 mV (switchable)
Resolution0.1 μV per bit0.1 μV / 0.5 μV per bit (switchable)0.1 μV / 0.5 μV per bit (switchable)
Power SupplyPowerPack (external rechargeable battery) or
Mains Power Supply for BrainAmp
PowerPack (external rechargeable battery) or
Mains Power Supply for BrainAmp
PowerPack (external rechargeable battery) or
Mains Power Supply for BrainAmp
Power consumption (in operation)Max. 110 mAMax. 130 mAMax. 120 mA
Power consumption (in standby)Typically 7 mATypically 7 mATypically 7 mA
Amplitude accuracy±2%±2%±2%
Bit width of the A/D converter (EEG and AUX)16 bit16 bit16 bit
Sampling rate5 kHz per channel5 kHz per channel5 kHz per channel
DC offset tolerance±300 mV±300 mV±300 mV
Signal transmissionOptically coupled using duplex fiber optic cablesOptically coupled using duplex fiber optic cablesOptically coupled using duplex fiber optic cables
Operating time between chargesTypically 30 hours with one amplifier, 15 hours with two amplifiersTypically 30 hours with one amplifier, 15 hours with two amplifiersTypically 30 hours with one amplifier, 15 hours with two amplifiers
Dimensions (H x W x D)Approx. 68 mm x 160 mm x 187 mmApprox. 68 mm x 160 mm x 187 mmApprox. 68 mm x 160 mm x 187 mm
WeightApprox. 1.1 kgApprox. 1.1 kgApprox. 1.1 kg
Integrated impedance measurementPresent;
measurement includes ground electrode and reference electrode
Present;
measurement includes ground electrode and reference electrode
Present;
measurement includes ground electrode and reference electrode
Unlocking functionPresentPresentPresent
Locking of unused channelsPresentPresentPresent
Suitable for use in MR scanner roomNoNoNo
Battery (PowerPack)
Number of amplifiers supplied1 or 2
Charging voltage9 V DC
Charging current670 mA
Rated capacity6,500 mAh
Output voltage5.6 V DC
Output current300 mA
Total Operating timeApprox. 4,000 hours
ChargingUsing external charger (Charger V9); only outside the scanner room
Charging timeApprox. 17 hours (with empty battery at room temperature)
Rechargeable battery typeLead gel rechargeable battery
Dimensions (H x W x D)Approx. 68 mm x 160 mm x 187 mm
WeightApprox. 1.9 kg
Electrical protection classII
Suitable for use in MR scanner roomYes
PowerPack charger V9
Input voltage range100 to 240 V AC, 50/60 Hz
Rated power consumptionMax. 145 mA
Output voltage9 V DC
Output currentMax. 670 mA
Suitable for use in MR scanner roomNo
WeightApprox. 130 g (without power adapter)
Miscellaneous applicable to all of the above
Medical devicesNo
CE markingsThe Brain Products GmbH confirms the electromagnetic compatibility (EMC) of these products according to the Directive 2014/30/ EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility.

The Brain Products GmbH confirms the RoHS compliance of these products according to Directive 2011/65/EU of the European Parliament and the Council of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (recast published in the Official Journal of the European Union on 1 July 2011) as well as all its amendments up to and including the Commission delegated directive (EU) 2015/863 of 31 March 2015 (published in the Official Journal of the European Union on 4 June 2015).

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Worldwide Caution: Our products are scientific equipment for INVESTIGATIONAL USE ONLY! Medical use e.g. for diagnosis, treatment of disease or other such purposes is strictly forbidden.