Anyone Know What Turning the PC-76 Meter Screw Does?

Jesse G
OK, I am back in the Lab and I have Held Alt+Ctrl and then clicked on the PC-76 meter and I don't hear or see a change in anything.   I do however, see the screw moving, but that's about it.
 
What am I really missing here?

...wicked
I thought I recalled that it did actually do something, HF bias or some such. But I may be recalling wrong.
 

Anderton
Try this: Hold Alt+Ctrl, click on the PC-76 meter, then drag up/down. The little meter screw turns.

ampfixer
 
If you are referring to the R37 screw, it adjusts the high frequency response on an LA2A and most emulations. I find the effect is easier to hear when you sweep that control. Even on the real deal it is a subtle difference.

Andrew Rossa [Cakewalk]
It's an easter egg that was put in to the module as already mentioned. Does nothing to the sound :)

fitzj
Is is not based on the hardware  device it was modeled on. That screw could on the hardware device
 calibrate to -20 -18 -12 RMS.
 
?????

R37 (High Frequency Pre-emphasis trim). This control adjusts the gain reduction frequency response. The original hardware unit was designed for leveling in radio and TV broadcast applications. Due to an increase in high frequency content in FM broadcasting, the R37 control adds gain reduction at frequencies above 1kHz, based on the program material. Use this control to reduce or prevent over-modulation caused by the pre-emphasis (high-frequency sensitivity). When set to the FLAT position, gain reduction is applied equally on all frequencies. When the control is moved toward the HF position, gain reduction is increased on the high frequencies. Experiment to achieve a good balance between low and high frequency limiting. This control is often useful for de-essing vocals (cut down sibilance by compressing high frequencies), but the FLAT setting is recommended for most music applications. To adjust the knob in fine increments, hold down the SHIFT key while moving the knob.