LiveAmp 64

High density wireless EEG amplifier

Besides the 8, 16 and 32 channel versions of the LiveAmp, we most recently added a 64-channel version to complement the LiveAmp amplifier family. With the LiveAmp 64, you can record high-density and high-quality EEG without mobility limitations.

LiveAmp 64 features at a glance

• ultra-lightweight and compact, wearable, 24-bit amplifier
  
• intuitive to use and compact
  
• records 64 unipolar channels or (when used with passive electrodes) 56 unipolar and 8 bipolar channels
  
• same superior technical specifications as the rest of the LiveAmp family translate into the signal quality of a high-end stationary amplifier system
  
• offers local data storage in parallel to wireless data transmission
  
• integrated 3 axis accelerometer
  
• 2 bit triggers
  
• up to 4.5 hours of uninterrupted recording time (see technical specifications)
  
• to be used with a wide range of innovative passive and active electrode technologies and sensors

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. [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 and type of EEG/ExG channels	LiveAmp 64 can record either 64 unipolar channels or 56 unipolar and 8 bipolar channels.
Measurement range of EEG/ExG channels	± 341.6 mV
Gain factor	12
Input noise of EEG/ExG channels	< 2 µVpp (0.01 Hz to 65 Hz @ 250 Hz sample rate)
Input impedance of EEG/ExG channels to GND	> 200 MOhm (at DC) impedance of EEG/ExG channels to GND
Differential input impedance between two EEG/ExG channels or bipolar EEG/ExG channels	> 400 MOhm (at DC) impedance between two EEG/ExG channels or bipolar EEG/ExG channels
Common-mode rejection (CMR) of EEG/ExG channels	> 80 dB (at 50/60 Hz)
Signal coupling of EEG/ExG channels	DC, i.e. no high pass filter in amplifier hardware
Low-pass filter for EEG/ExG channels 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 of EEG/ExG channels	24 bit
Resolution of EEG/ExG channels	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 sample rate	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 (included in BrainVision Recorder 1.21.0004 and higher)
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 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)
Uninterrupted recording time with built-in battery	> 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)	83 mm x 51 mm x 14 mm
Weight	Approx. 60 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 Watt
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
Product classification	Non-medical product
EMC	Tested according to EN 61326-1:2013
CE marking	CE marking based on Radio Equipment Directive (RED) 2014/53/EU (as of June 2017)
Suitable for use in MR scanner room	No, MR unsafe