Too much gain can be just as bad, as not enough. With this three band amplifier you have the ability to make your gain adjustments just right. With an adjustable gain control, giving you up to 25dB of gain in the VHF, 22dB in the UHF and 18dB in the FM Band! This Signature Series 25dB Amplifier is powered by 120 volt mains AC that easily plugs into any standard outlet. All cable connections are also the standard F type. This amp also features an on/off light to take the guess work out of it's current operational status. That's not all, it's tough on noise and interference because of its heavy metal housing and solid construction.