LiveAmp 64

Compact wireless EEG amplifier especially designed for high density mobile EEG applications

Besides the 8, 16 and 32 channel versions of the LiveAmp, we also offer a 64-channel version. With the LiveAmp 64, you can record high density and high-quality EEG without mobility limitations. Just like the lower channel versions, the LiveAmp 64 is a wearable, 24-bit amplifier. As it is wireless and allows you to store your recorded data internally (i.e. on an exchangeable memory card), there are no mobility limitations. The LiveAmp 64 is easy and intuitive to use and its technical specifications leave nothing to be desired …

LiveAmp 64 at a glance

  • Outstanding signal quality
  • Records 64 unipolar channels or (when used with passive electrodes) 56 unipolar and 8 bipolar channels
  • Ultra lightweight and compact
  • Flexible and expandable
  • Integrated accelerometer
  • Electrode options: passive – active – active dry – sponge – solid gel

The 64-channel version of LiveAmp is available as an upgrade to the LiveAmp 32-channel amplifier. It combines two LiveAmp 32-channel amplifiers, which are interconnected through the cap connector.

If you already have a stationary EEG electrode system and use active electrodes, for example our actiCHamp, you can re-use your existing actiCAP active electrode sets and actiCAP caps with the LiveAmp 64. The only thing you need to add is two LiveAmp 32 with the 64-channel LiveAmp active electrode adapter.

On the other hand, if you already have a LiveAmp 32, it can easily be upgraded to a LiveAmp 64 to obtain high-density EEG with outstanding signal quality The LiveAmp 64 is not only the perfect solution for high-density wireless and portable EEG recordings outside of the lab, it also provides the added benefit of having two fully functional 32 channel amplifiers. This ingenuity, along with LSL integration, allows for hyperscanning – that is, recording two subjects from each LiveAmp 32. Brain Products and EASYCAP offer flexible solutions for electrode arrangement to best suit your needs, such as two 32-channel electrode bundles and caps with overlaying 64 and 32 channel counts to provide more options for your recording needs.

Of course, it is also possible to use LiveAmp 64 in combination with the LiveAmp sensor and trigger extension. This extends the system with 8 auxiliary inputs and an additional 8-bit trigger in and 8-bit trigger output – adding up to a total of 72 channels.

Technical Specifications

LiveAmpTechnical specifications
EEG/ExG channels
Number/type of channelsLiveAmp 8: LiveAmp 8 can record a total of 8 channels, referential and/or bipolar.
LiveAmp 16: LiveAmp 16 can record a total of 16 referential channels with a maximum of 8 bipolar channels or 8 referential and 8 bipolar channels.
LiveAmp 32: LiveAmp 32 can record either 32 referential channels or 24 referential and 8 bipolar channels.
LiveAmp 64: LiveAmp 64 can record either 64 referential channels or 56 referential and 8 bipolar channels.
Hardware sampling ratesSelect between 250 Hz, 500 Hz and 1,000 Hz.
Note: Maximum wireless bandwidth cannot always be guaranteed due to external interference
Sampling Rate = 1000 HzEEG/ExG channels: Up to 32 channels (this incl. AUX and acceleration)
Sampling Rate = 500 HzEEG/ExG channels: 32 channels or more (this incl. AUX and acceleration)
Acceleration sensorBuilt-in 3-axis acceleration sensor Three separate channels (x, y, z) Measurement range: ±2 g Resolution: 1 mg/bit, 12 bit Error: ±0.2 g (±10% of full scale)
A/D conversion24 bit
ResolutionApprox. 40.7 nV / bit (= 2*341.6 mV / 224 bit)
Measurement range±341.6 mV
LiveAmpTechnical specifications
EEG/ExG channels
Signal couplingDC (there is no high pass filter in amplifier hardware)
Input noise< 2 μVpp (0.01 Hz to 65 Hz at 250 Hz sampling rate)
measured with internal battery and shorted inputs
Input impedance> 200 MΩ (at DC)
impedance of EEG/ExG channels to GND
Differential input impedance> 400 MΩ (at DC)
impedance between two EEG/ExG channels or bipolar EEG/ExG channels
Common-mode rejection (CMR)> 80 dB (at 50/60 Hz)
Low pass filter in amplifierThird order sinc filter with -3 dB frequency depending on the sample rate:
- 1,000 Hz: 262 Hz
- 500 Hz: 131 Hz
- 250 Hz: 65 Hz
Compatible electrodes- Passive Ag/AgCl based electrodes
- Active actiCAP electrodes
Impedance measurementAvailable for passive and active electrodes and integrated in amplifier
Impedance measurement rangeUp to 500 kOhm
Wireless transmission
Wireless data transmissionIn 2.402 - 2.480 GHz ISM band
worldwide no restrictions for using this ISM range
Radio frequency output powerMax. 13 dBm (approx. 20 mW)
Wireless transmission rangeIndoor: Up to 10 m (depending on environment)
Outdoor: Up to 30 m
Data Storage
Data storage- On recording computer via wireless transmission
- On micro memory card
- On recording computer and on micro memory card
Card typeMicro SD® card, class 10
Size of memory card32 GB
Maximum file size on memory card4 GB
Data format on internal memory cardProprietary format; can be converted to generic Brain Products data format with converter software provided by Brain Products
Battery and power supply
Power supplyBuilt-in rechargeable battery; Capacity: 1,000 mAh
Current consumptionMax. 250 mA
Charging timeApprox. 4 hours at 500 mA (for example, USB port of a computer)
Uninterrupted recording time with built-in battery (when fully charged)- 3 hours (wireless data transfer only and passive electrodes)
- 4.5 hours (storage on memory card only and passive electrodes)
Dimensions and weight
LiveAmp 8, 16, 32: Dimensions (W x D x H)83 mm x 51 mm x 14 mm
LiveAmp 8, 16, 32: WeightApprox. 60 g (incl. built-in battery)
LiveAmp 64: Dimensions (W x D x H)140 mm x 83 mm x 18 mm (incl. connectors: 25 mm)
LiveAmp 64: WeightApprox. 120 g (incl. built-in battery)
Further data
Built-in trigger/marker inputYes, 3-pin 2.5 mm phone jack; TTL compatible; active low
LED indicatorsBattery/status LED: green, yellow, red
Wireless LED: blue
LiveAmp USB adapter
USB communicationData rate: 12 MBit/s
USB 2.0 compatible
Input and output voltage5 V
Maximum power transfer5 W
Galvanic isolation2,500 VDC
Dimensions (W x D x H)40 mm x 30 mm x 20 mm
WeightApprox. 30 g
Cable lengthApprox. 50 cm, not detachable
Suitable for use in MR scanner roomNo
Medical deviceNo
CE markingBrain Products GmbH confirms the compatibility of this product according to the Directive 2014/53/EU (RED) of the European Parliament and the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment.

The Brain Products GmbH confirms the RoHS compliance of this product according to the 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 0fficial Journal of the European Union on 4 June 2015).
FCC compliance (USA)Yes
IC compliance (Canada)Yes

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