The Texas Star Linear Amplifier 350 HDV is a high-quality amplification device designed specifically for ham radio enthusiasts. With a focus on delivering clear and powerful signal amplification, this model is ideal for those looking to boost their radio communication capabilities. The Texas Star brand is known for its reliability and performance in the world of ham radio amplifiers, making this product a popular choice among hobbyists and professionals alike.This is one of my favorite amps ,with Toshibas and no but ,I never over drived it .Meter works and preamp works as should and button lights all work.I hate to get rid of it but need to down size , thanks!