The Stroh violin or Stroviol is a type of stringed musical instrument that is mechanically amplified by a metal resonator and horn attached to its body. The name Stroviol refers to a violin, but other instruments have been modified with the amplification device, including the viola, cello, double bass, ukulele, mandolin, and guitar. Johannes Matthias Augustus Stroh, an electrical engineer from Frankfurt, invented the instrument in London in 1899.
Stroh violin
Stroh violin at the Museu de la Música de Barcelona
Man playing a Stroh violin in a New Orleans Mardi Gras parade
Violinophone built by Klaus Eberle (leader of the Grazer Salonorchester)
In musical instrument classification, string instruments or chordophones, are musical instruments that produce sound from vibrating strings when a performer plays or sounds the strings in some manner.
Bow Harp or Harp Lute, West Africa
Hellenistic banquet scene from the 1st century AD, Hadda, Gandhara. Lute player far right.
Spanish stele of a boy with a pandura.
Viol, fidel and rebec (from left to right) on display at Amakusa Korejiyokan in Amakusa, Kumamoto, Japan