# DC-Gain from bode plot

I have the following bode plot and I am trying to determine the DC-Gain and the Gain at high frequencies

How do I calculate the DC-Gain from this plot? Matlab's function dcgain() says that it is equal to 2. How do determine this?

• If the gain, in terms of output signal magnitude divided by input signal magnitude, is $G$ then the gain in dB is $20log_{10} G$ – Chu Apr 6 '17 at 19:04
• From the graph 6dB----> 6/20 = 0.3;---->10^0.3 = 2[V/V] – G36 Apr 6 '17 at 19:06