Preamplifier relais control with CMOS logic
The circuit describes a complete Preamplifier relais control.
It provides for 6 Inputs of which 2 may be Tape-Ins, and one delayed Output.
Moreover there are 2 Tape loops for two-way recording and read after write.
Further more there´s a switch-on for a headphone amplifier and a mute-function.
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