Universal Audio UAD Plug-Ins ver.7.5 - Manual (Page 498)

UAD Powered Plug-Ins Manual - 498 - Chapter 51: UA 610 Tube Preamp & EQ Collection
Hardware Input Impedance
All Apollo mic preamps feature input impedance switching in analog hard-
ware that can be physically switched by Unison plug-ins for physical, micro-
phone-to-preamp resistive interaction. This impedance switching enables
Apollo’s preamps to physically match the emulated unit’s input impedance,
which can significantly impact the sound of a microphone. Because the elec-
trical loading occurs on input, prior to A/D conversion, the realism is faithful
to the original target hardware preamp.
Tactile Gain Staging
Apollo’s front panel preamp knob can independently adjust all gain and level
parameters available within the Unison plug-in via Gain Stage Mode. The
gain stage being adjusted can be remotely switched via Apollo, so multiple
gain levels and their associated colorations can be tuned from the hardware
knob for precise physical tactile control, all without using the Unison plug-in’s
software interface.
Note: Unison is active only when the plug-ins are inserted in the unique
PREAMP insert within Apollo’s Console application. For complete Unison de-
tails, see the Apollo Software Manual.