The Vintage 1970s Heathkit AD-1305 Five Band Audio Equalizer EQ is a rare and collectible piece of vintage audio equipment from the United States. Made by Heathkit, a well-known brand in the world of vintage electronics, this audio equalizer offers five separate bands for adjusting audio frequencies. Perfect for audiophiles and collectors of vintage audio equipment, this Heathkit AD-1305 is a unique and sought-after item for those looking to add a piece of audio history to their collection.