The Marantz model 2440 quadradial adaptor amplifier converts any stereo system with tape source monitor feature to a full featured 4-channel system.
The 2440 incorporates Marantz's exclusive vari-matrix circuit which simulates 4-channel sound from normal 2-channel stereo programs, and is capable of reproducing 4-channel sound from any matrix encoded source.
It will also reproduce any discrete 4-channel program as well as regular stereo and monaural programs.
An optional plug-in decoder adapts the 2440 for specific matrix systems such as Columbia's SQ or Electro-Voice Stereo 4.
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