Vintage Martin Guitars FRAP D-18D Acoustic Guitar Transducer Print Ad 1970s For Sale

Explore this original vintage print advertisement featuring Martin Guitars and the innovative FRAP transducer system. The ad highlights the integration of the specially built transducer, miniaturized pre-amp, and mercury battery clip into new D-18D acoustic guitars. It details how this technology allows for pure original sound delivery to an amplifier, with the jack and switch cleverly built into the endpin. The advertisement emphasizes the FRAP system's tailored frequency response, designed to minimize response and body resonance, ensuring the iconic Martin sound is amplified, not altered.This piece of ephemera offers a fascinating glimpse into a period of innovation for Martin Guitars, a brand renowned for its heritage "Since 1833" in Nazareth, Pennsylvania. The visual showcases a classic Martin acoustic guitar, illustrating the connection to the amplification system. It's a collectible item for enthusiasts of vintage musical instruments, guitar technology, and advertising history, capturing a moment when advancements like the FRAP system were introduced to enhance the acoustic experience.