Over 25 years of experience in designing PSG & EEG amplifiers, including the highly successful E-Series, has culminated in Grael PSG. 
Based on the flagship Grael amplifier, the Grael PSG has a channel subset dedicated for Sleep studies. 
A true-HD PSG amplifier with channels as specified for the Gold standard AASM Type 1 studies. 
A single IP connection to the Grael amplifier provides power & data transmission, making it very easy to set up the system at different locations in your department.