@ghdprentice The Marantz 10b Tuner had an oscilloscope on the front panel in 1965. It remains the best way to tune ever devised. My Apt-1 preamp has a world class phono stage with a proper subsonic filter, actual usable tone controls, flexible mono switching, and a L-R to L+R blend control that I find incredibly useful. Some may consider those bells and whistles, I do not.
