Universal Audio UAD Plug-Ins ver.7.4.2 - Manual (Page 497)

UAD Powered Plug-Ins Manual - 497 - Chapter 51: UA 610-B Tube Preamp
Impedance
Impedance selections are available for the Mic input. The Mic inputs
can be set to 500 ohms or 2 Kilohms; the different input impedances
have subtle effects on the signal color and response.
Unison
Impedance
When the plug-in is inserted in a PREAMP slot within the Apollo Console, the
hardware input impedance of the Apollo mic preamp changes to match the
value selected in the plug-in for unprecedented realism.
Matching the microphone to the closest impedance value is generally recom-
mended, but this parameter can be used creatively and will not harm equip-
ment connected to the Apollo mic preamp.
Note: For complete Unison details, see the Apollo Software Manual.
Input Pad/Gain In addition to the Input Select switch, the plug-in has Pad and Gain parame-
ters that control the signal level at the tube input stage.
The Pad controls are used to attenuate incoming signals for less coloration,
while the Gain controls increase the signal level for more tube color.
Note: Like the original hardware, values on the control labels may not match
actual measured values.
Input Gain The rotary Gain switch (at the top of the plug-in, beneath the
Power switch) changes the level at the tube input stage. The
control attenuates the input signal by –10 or –5 dB, or adds
+5 or +10 dB of gain. In the center “0” position, neither
gain nor attenuation is applied.
Input Pad Additional attenuation for the Mic input is available via the two-position
Pad switch (at the middle of the three up/down switches near the center
of the plug-in). Setting the switch to the “–15” (up) position attenuates
the Mic signal at the tube input stage by –15 dB. In the down position,
no attenuation is applied.
Note: Like the hardware, Input Pad for UA 610-B effects only the Mic input.