Zeros and Poles of an Amplifier
Why would it be different for the frequency response of an amplifier or a power converter? If I take the following transfer function \$H(s)=H_0\frac{(1-\frac{s}{\omega_{z1}})(1+\frac{s}{\omega_{z2}})}{(1+\frac{s}{\omega_{p1}})(1+\frac{s}{\omega_{p2}})}\$ which is the transfer function of a boost converter operated in the discontinuous conduction mode (DCM), the frequency response is below:



You can clearly see a gain in dc (\$H_0\$) then the effect of the poles and zeros. You realize the action of the right-half-plane zero (RHPZ) which brakes the -2 slope (-40 dB/dec) into a -1 slope (-20 dB/dec) but keeps lagging the phase at high frequency.