Rega Mira program mode to change Gain Settings

It’s easy. Turn the unit off. Then unscrew the left small cover at the back(three screws are holding it) :

1. Flip the blue dip switch to the ON position.

2. Power on the unit.

3. Select output gain level -

- Press the Tape button for a gain of 0.3V (1 LED appears on a volume circle)
- Press the Volume knob button for a gain of 0.8v (2 LEDs appear on the volume circle) (Rega Default value)
- Press Mute for a gain of 1.25V (3 LEDs appear on a volume circle)

4. Switch off the blue dip switch and replace/screw on the back cover.

5. Power off the unit, wait a few seconds, power on and enjoy!

UGH!  I am so sorry I totally missed this response!  Thank you so much for taking the time and posting great complete instructions!

I did as you listed and have it set to 1.25V for my Adcom GFA 555.

Thank you so much again!