Hi David,
No schematic at
www.radiomuseum.org -- but there is a little info about the company
http://www.radiomuseum.org/dsp_herstell ... ny_Id=7782 .
Quote:
Echolette, Germany. Founded 1949, closed in 1969.
In association with the Klemt Co., Echolette was founded around 1949. The founder was Hans Bauer. Emphasis was on production of amplifiers with reverberation (hence the name "Echolette") for professional applications. First products were entirely tube-based, later moving to partially transistorized designs. In 1969, the company merged with the Dynacord Co. in Straubing. Products under the name "Echolette" were produced until the 1980s.