Most do but as a higher-frequency (15kHz) oscillator, it has smaller components that don’t drift as much and so the control is a trimmer inside only calibrated as often as a tube needs swapping. On transistor sets, that’s like, never, so they glue the trimmer to avoid misadjustment during transport.
Most do but as a higher-frequency (15kHz) oscillator, it has smaller components that don’t drift as much and so the control is a trimmer inside only calibrated as often as a tube needs swapping. On transistor sets, that’s like, never, so they glue the trimmer to avoid misadjustment during transport.