Double-tuned amplifier
![A typical 2-stage double-tuned amplifier](/Images/godic/202501/09/Double_tuned_amplifier.svg3532.png")
![Generic representation of one stage of a double-tuned amplifier and part of the following stage](/Images/godic/202501/09/Doubler_tuned_amplifier_generic.svg3532.png")
![Double-tuned amplifier frequency response for various values of coupling](/Images/godic/202501/09/Double_tuned_response.svg3532.png")
A double-tuned amplifier is a tuned amplifier with transformer coupling between the amplifier stages in which the inductances of both the primary and secondary windings are tuned separately with a capacitor across each. The scheme results in a wider bandwidth and steeper skirts than a single tuned circuit would achieve.