Different Vibe PCB

Despite its name this is actually closer to a harmonic tremolo. Alternating volume focus on bass and treble frequencies with varying depth and speed. Circuit will accept 5672, 5678, or 6418 subminiature vacuum tubes. Subminiature tubes are highly microphonic and are susceptible to shakes and vibrations. When jostled too much they produce and audible “ping” which slowly fades. Therefore it is recommended that a soft switch circuit be used to activate it as a typical 3pdt footswitch “click” is often enough to produce the pinging sound.