However, I could use guidance on the following buttons/switches, filter low/high, tone defeat, reverse, mono, FM 25us, FM muting, Acoustic switches and the Sound Inject knob-far right.
The manual has the best info, but here goes.
Filter high: reduces unwanted HF signal like tape hiss
Filter low: reduces unwanted LF like turntable rumble
Tone defeat: turns off the treble and bass controls and bypasses them. If you want to use the tone controls, be sure the tone defeat is not pushed in.
Reverse: swaps left and right channels. Why? I don’t know.
Mono: combines the channels. Remember, this beast was made not long after the disappearance of mono records, but lots of collections still had them. If you ever get a mono record, you might want this.
FM 25us pre-emphasis & FM muting: reduces FM noise.
Acoustic switches: boosts signal a predefined amount at predefined frequencies. Kinda like a fixed tone control.
Sound inject: sets the level of the mic compared to the music. Needs a mic to be plugged in. Pull the knob to activate.
Real world: apart from playing with these switches for a few minutes, chances you will not use them. They came from a time when people thought they wanted lots of controls and bells and whistles. They will not improve your enjoyment of the music. Maybe a click or two on the bass or treble is all you will need for 99% of your listening. But they look cool.
