The 7-Channel Amplifier-Attenuator Board can be ordered with one of three gain options: 20 dB, 30 dB, or 40 dB.
 
This board allows the user to customize their 7-Channel Amplifier-Attenuator Module, 13-Pin Input Breakout Module, or 13-Pin Output Breakout Module by replacing the existing amplifier board with a different gain version.  Replacement takes only a few minutes!
 
Hand-built in the USA.