The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.
Knob - Plastic, Set Screw, Skirted Pointer, 1.125" DiameterLarge black plastic control knob with set screw and brass insert. This distinctive pointer knob is similar to the selector knobs used on original MiniMoog and Moog modular synths. It features a triangular pointer, a radial brushed metal top, and a line indicator. The large skirt has a diameter of 1.125 inches. Fits ¼” (6.35mm) pot shafts.
Vacuum Tube - 6FG6 / EM84, Indicator, Tuning
Indicator tube with amplifying triode for use as tuning indicator or for modulation control
Vacuum Tube - 6DA5 / EM81, Indicator, Electron Ray
Electron-ray tuning indicator
Vacuum Tube - 6HU6 / EM87, Indicator, Tuning
New-Old-Stock (NOS) tube. Tuning indicator tube