equa amplifier

Literally thousands of circuits for transistoramplifiers have been developed, all of which were later marketed under the banner of hifi. The brands that meet the Equastandards laid down in this issue can, however, be counted on the fingers of one - possibly two - hands. A feedback loudspeaker system (`electronic loudspeaker`) places very strict requirements on the associated amplifier. This consideration, among others, led the editors to develop an equa-amplifier, with a circuit that could be easily adapted to give any output power up to 100 Watts.