This listing is for ONE - USED - RF Power Amplifier. The spec on this amp is below. These were made to fit directly on the back of Bendix king DMH5992 DMG5992X GMH5992 GMH5992X radios and bolt directly on. These can also be used on ANY MODEL Radio that is 25 watt and amplifies that 25 watt to get 100 watts Output.These Used Amplifiers have been tested and checked here in the shop and work to 100% spec! . Any Questions, please ask.