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.

Introducing the LiveAmp amplifier series in detail

• Official market release of LiveAmp 32 - Brain Products’ solution for superior quality mobile wireless EEG ... [more details]
  
• Introducing LiveAmp 8 and LiveAmp 16: our wireless mobile amplifier in low-channel versions ... [more details]
  
• LiveAmp 64 – High density wireless EEG amplifier ... [more details]

Interested in more?

• Request more information or a quote: Click here
  
• Contact your local distributor: Click here

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.

EEG/ExG channels	LiveAmp 64
Number / type of channels	LiveAmp 64 can record either 64 unipolar channels or 56 unipolar and 8 bipolar channels.
Measurement range	± 341.6 mV
Gain factor	12
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 MOhm (at DC) impedance of EEG/ExG channels to GND
Differential input impedance	> 400 MOhm (at DC) impedance between two EEG/ExG channels or bipolar EEG/ExG channels
Common-mode rejection (CMR)	> 80 dB (at 50/60 Hz)
Signal coupling	DC (there is no high pass filter in amplifier hardware)
Low-pass filter in amplifier	Third 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
A/D conversion	24 bit
Resolution	Approx. 40.7 nV / bit
Acceleration sensor	Built-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)
Hardware sampling rates	Select between 250 Hz, 500 Hz and 1,000 Hz. Note: Maximum wireless bandwidth cannot always be guaranteed due to external interference.
	Sampling Rate 1000 Hz: Up to 32 EEG / ExG channels (this incl. AUX and acceleration)
	Sampling Rate 500 Hz: 32 EEG / ExG channels or more (this incl. AUX and acceleration)
Data Storage	LiveAmp 64
Data storage	On recording computer via wireless transmission On micro memory card On recording computer and on micro memory card
Card type	micro SD® card, class 10
Size of memory card	32 GB
Maximum file size on memory card	4 GB
Data format on internal memory card	Proprietary format; can be converted to generic Brain Products data format with converter software provided by Brain Products (File Converter)
Wireless Transmission	LiveAmp 64
Wireless data transmission	In 2.402-2.480 GHz ISM band (worldwide no restrictions for using this ISM range)
Radio frequency output power	Max. 13 dBm (approx. 20 mW)
Wireless transmission range	Indoor: Up to 10 m (depending on environment) Outdoor: Up to 30 m
Electrodes	LiveAmp 64
Compatible electrodes	Passive Ag/AgCl based electrodes, active actiCAP / actiCAP slim electrodes from Brain Products with LiveAmp connector, or actiCAP Xpress Twist (active dry electrodes)
Impedance measurement	Available for passive and active electrodes and integrated in amplifier
Impedance measurement range	Up to 500 kOhm
Battery and Power Supply	LiveAmp 64
Power supply	Built-in rechargeable battery Capacity: 1,000 mAh.
Current consumption	Max. 250 mA
Charging time	Approx. 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)
Further Data	LiveAmp 64
Built-in trigger/marker input	Yes, 3-pin 2.5 mm phone jack; TTL compatible; active low
LED indicators	Battery/status LED: green, yellow, red Wireless LED: blue
Dimensions (W x D x H)	110 mm x 83 mm x 14 mm
Weight	Approx. 120 g (incl. built-in battery)
USB adapter for LiveAmp	LiveAmp 64
USB communication	Data rate: 12 MBit/s; USB 2.0 compatible
Input and output voltage	5 V
Maximum power transfer	5 W
Galvanic isolation	2,500 VDC
Dimensions (W x D x H)	40 mm x 30 mm x 20 mm
Weight	Approx. 30 g (incl. cable to LiveAmp amplifier)
Cable length	Approx. 50 cm, not detachable
System Requirements	LiveAmp 64
Operating system	Windows® 7, 32 and 64 bit Windows® 8.1, 64 bit Windows® 10
USB port	USB 2.0 or higher
LiveAmp Firmware	firmware version 4.60 or later (for both LiveAmps)
Software requirements	BrainVision Recorder 1.21.0303 or later
Miscellaneous for LiveAmp family	LiveAmp 64
Suitable for use in MR scanner room	no
Medical product	no
CE marking	Brain Products GmbH confirms the compatibility of this product according to the DIRECTIVE 2014/53/EU (RED) OF THE EUROPEAN PARLIAMENT AND OF 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.
FCC compliance (USA)	yes
IC compliance (Canada)	yes
MIC compliance (Japan)	yes