Additional information Stenzel & Kivits for theaters and (company) events. Reserved space: 4x4 meter minimum Duration of concert: 15 to 80 min. Amplification: Stenzel & Kivits have their own transmission microphones and sound equipment to their disposal, which is adequate for an audience of 125 people. For bigger audiences, additional amplification is needed. Gear: a ‘prepared’ grand piano on air-filled tires (approx. 100Kg) and a double bass and/or a kettledrum.