Basically one half of an STA-15, the MA-15 was first released in 1961 with a Mk II following a year later. Intended for use with the SC-2 control unit, home-constructors had the opportunity to build their own MA-15 MkII when a series of articles appeared in Hi-Fi News in June 1962. This was followed in October 1962 by a series of articles on how to build the SC-2.

Click on a thumbnail
for enlargement