Making Music With A Vintage Vacuum Tube Piano Tuner
'This beautiful measurement device is meant for tuning pianos,' explains Hainbach, 'but has little 13-step keyboard and nice knob for volume, which makes it rather playable as a primitive monophonic synthesizer.'… Read More Making Music With A Vintage Vacuum Tube Piano Tuner
https://www.synthtopia.com/content/2021/06/13/making-music-with-a-vintage-vacuum-tube-piano-tuner/