Universal Audio UAD Plug-Ins ver.7.5 - Manual (Page 499)

UAD Powered Plug-Ins Manual - 499 - Chapter 51: UA 610 Tube Preamp & EQ Collection
Input Level Controls
Input levels for the UA 610 plug-ins are controlled by the overall combination
of the input select, pad, and gain controls available within each plug-in.
These parameters, which vary per model, control the first tube gain stage in
the plug-ins. 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 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 (with UA 610-B, the 500 and 2.0K settings), it’s as if the
DAW signal is plugged into the microphone input of the emulated 610 hard-
ware and approximately 30 dB of additional (unattenuated) tube gain is ap-
plied. 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 as-
sociated with overdriving the input.
Important: Use caution when switching to Mic from Line, as signal output
levels can increase significantly (as they would with a hardware preamp).
UA 610-A
Mic and Line inputs are available. The mic input impedance of the
610-A hardware is 600
Ω.
UA 610-B
Mic and Line inputs are available, with the additional availability
of input impedance selections for the Mic input. The Mic input can
be switched to 500
Ω or 2KΩ; the different input impedances have
subtle effects on the signal color and response.