Single-frequency radiation is often considered to be indispensable for coherent beam Combination (CBC) of fiber amplifiers in master oscillator power amplifier (MOPA) configuration. Nevertheless,the single-frequency radiation limits the output power of each single fiber gain due to low stimulated Brillouin scattering (SBS) threshold. Wide linewidth and multi-wavelength radiations are two effective approaches to mitigate SBS effects in fiber amplifiers. Coherent beam combination of three wide-linewidth fiber amplifiers and three multi-wavelength fiber amplifiers are both experimentally demonstrated using stochastic parallel gradient descents (SPGD) algorithm. The experimental results show that single radiation is not indispensable for CBC in MOPA configuration,the application of wide-linewidth and multi-wavelength amplifiers present the potential in achieving a much higher output power in MOPA configuration.