It can cause nausea and diarrhea, especially in high doses or after long-term use. It might also pose a risk of ulcers in high doses. As a topical treatment, it can cause skin irritation. Caution is advised when turmeric is taken by people known to have gallstones; consult your health care provider first.
Gain is the ratio between the magnitude of output and input signals. Gain controls on an amplifier are basically just small potentiometers (variable resistors) or volume controls, that allow you to adjust the incoming signal to the amplifier.
Let us explain it to you the dB Gain meaning realistically, in simplest terms. Most people measure the strength of their cell phone signal by looking at the number of bars of service on the phone. That is generally understood as a good guide, but not an accurate one because the number of bars mean different things on different networks.