Generally, the distortion of the negative feedback amplifier is reduced by a factor equal to the return difference (1+${eta}_1A_1$), but the proposed feedforward amplifier is reduced by a factor equal to the square of the return difference (1+${eta}_1A_1$). In this paper, a feedforward amplifier with error correction is designed and implemented. So as to evaluate the characteristics of the harmonic distortion that the inverting feedforward amplifier is compared with that of the reference amplifier without feedforward error correction. It is confirmed that the proposed method should be able to reduce much greater than compared with a conventional negative feedback amplifier. Therefore it should be noted that the proposed feedforward amplifier network is also acceptable for wide-band amplifiers and the network which is demanded to improve the harmonic distortion.