explanation

So, i didn't well speak what Gain level on specification on amplifier means exactly, maybe it act like a sort of compression on sound quality? For example: JDS Atom Labs 1.0W 32ohm: Low gain=x1.0/High Gain=x4.5 THX AAA 789 Unbalanced 1,8W 32ohm: Low gain=x0,33=-10dB / Medium Gain=x1.0=0dB /...