Behringer ULTRA-DYNE PRO DSP9024 User Manual page 16

Display Function
EXC Exciter
O/E Exciter
PRC Tube
TYP Tube
Parameter
Process
Odd/Even
Process
Type 12AX7, 12AY7, EL34, EL84
Range
0 to 100
1/19 to 19/1
0 to 100
Default Value
0
10/10
0
12AX7