The Donkey Stomper External Pre-Amp Base/Mobile is a versatile and powerful amplifier that is perfect for any ham radio enthusiast. With its compact design, this pre-amp can be easily taken on the go or set up at a fixed location. It supports multiple modes, including SSB, CW, and AM, making it a great choice for any type of radio communication. The brand of this pre-amp is Donkey Stomper, and it is designed to provide high-quality performance and reliability. Its model name is Pre-Amp, and it is suitable for both base and mobile use. This amplifier is ideal for those who are looking for a reliable and versatile option for their ham radio needs.