Speakers are 100% Acoustat 3s as mentionned by John.
Gyrodec ? I don't know. Gyrodec has a diiferent platter with some weight under it. But maybe some early Gyrodec have different platter.
Maby this one ?
Than as mentionned by louballoo Threshold FET One.
On the Threshold there is one tuner, and it could be anything.