Universal Audio UAD Plug-Ins ver.7.4.2 - Manual (Page 496)

UAD Powered Plug-Ins Manual - 496 - Chapter 51: UA 610-B Tube Preamp
When Unison is active, related controls in the plug-in and the Apollo hard-
ware are mirrored. Modifying a control on Apollo’s front panel will modify
the plug-in setting, and vice versa.
Note: Unison is active only when the plug-in is inserted in a PREAMP insert
slot within Apollo’s Console application. For complete Unison details, see the
Apollo Software Manual.
Input Level Controls
Input levels for the UA 610-B plug-in is controlled by the overall combination
of the input select, pad, and gain controls available within the plug-in.
These parameters control the first tube gain stage in the plug-in. Generally
speaking, higher input gains will produce more color in the signal.
Input Select The 610 hardware has both mic and line level inputs. The Input Select control
switches between the “virtual input jacks” in the emulated models.
In most mic preamplifiers (including the 610), the difference between the mic
and line inputs is simply that the line input is attenuated before entering the
preamp circuitry; the gain circuits are typically not different for the mic and
line inputs.
Line
When set to Line, it’s as if the DAW signal is plugged into the line level input
of the emulated 610 hardware. Less tube gain is applied, and a cleaner
sound is obtained.
Mic
When set to Mic (the 500 and 2.0K settings), it’s as if the DAW signal is
plugged into the microphone input of the emulated 610 hardware and ap-
proximately 30 dB of additional (unattenuated) tube gain is applied. Since
the incoming signal in from the DAW is already at line level, this mode will
more readily result in the tube color, saturation, and/or clipping associated
with overdriving the input.
Important: Use caution when switching to Mic (500 or 2.0K settings) from
Line, as signal output levels can increase significantly (as they would with a
hardware preamp).