I was trying to use the Ortec Aspec-927 MCA with Maestro-32, and realized the PMT signal is too weak for it to detect. I passed the signal through a 16-channel amplifier, yet it is still not detecting anything. I passed the output from the PMT into an oscilloscope, and the PMT is working just fine, did the same thing from the amplifier output, and the amplifier did amplify the signal. Is it inadvisable to feed the output from the amplifier into the same amplfier (different channel) to try amplifying once more without creating too much error for the signal output? Please help! I would very much appreciate it. NOTE: I am trying to use the PMT to detect muons, but running it by itself to make sure the apparatus as a whole will work, rather than trying to identify the missing components later.