U2373j - tube crusher

The crazy tube crusher U2373j is the small offshoot of the U2379 - tube distortion amplifier.
We now can adjust the degree of distortion of the bass, middle and treble separately. Changes like harmonic components,
grid2 bias and plate voltage can be made in the tube section and be equalized in the filter section, too.
Audio levels and bias setting of grid 2 are displayed in the VU meter section.

tube section
harmonics -potentiometer for harmonic components
grid2 bias - potentiometer for adjusting the crusher
bias - switch ( off / flicker / disruption ) for presetting the voltage of the crusher tube
bypass crusher - switch to deactivate the crusher function

filter section
adjustable via potentiometer
top - harmonic highs
body - harmonic middle components
bottom - harmonic low-frequencies
bypass filter - switch deactivates the filter function

meter section
VU to display the audio levels and bias setting of grid 2
in / bias / out - VU meter selection switch
mix balance potentiometers for mixing the effects