User's Manual
5
Sidechain Filter (SCF): A tunable low cut lter in the side-
chain of the xpressor 500 avoids overcompression and pump-
ing when there is a lot of low end energy in the mix.
Gain Reduction Limiter (GRL): Restricts the control volt-
age. This innovative limiter is not placed in the audio path as 
usual, but in the control circuit of the compressor. (p. 11)
Gain: The make-up gain of the xpressor 500. This control-
ler compensates for the loss in gain caused by the compres-
sion process.
Mix: The direct and the compressed signal can be blended 
in any desired relation by simply turning the mix controller. 
Onboard parallel compression!
Gain Reduction Meter: The display for the gain reduction 
process. Shows the amount of compression measured in dB as 
an visual support for the acoustic events.
GRL LED: indicates Gain Reduction Limiter activity. If this 
LED is on, incoming signals will be held at the GR limit instead 
of being compressed any further. (p. 11)
Auto Fast: A semi-automation. This function shortens the 
attack time automatically on fast and loud signal impulses and 
then returns to the value set with the controller. (p. 7) 
Log Release (Log Rel): This alternative release curve fol-
lows a logarithmic course instead of the standard linear prog-
ress which results in a very gentle kind of compression. (p. 8)
Warm Mode: The xpressor 500 oers a second switchable 
sound avor by altering its frequency spectrum, harmonics 
and transient response. (p. 9)
Hit It! Activates the xpressor 500 (LED on) or deactivates it 
with a hardwire bypass (GR meter remains active).










