Universal Audio UAD Plug-Ins ver.7.5 - Manual (Page 56)

UAD Powered Plug-Ins Manual - 56 - Chapter 4: API Vision Console Channel Strip
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 the 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 the
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.
API Vision
Console Channel
Strip Latency
These plug-ins use an internal upsampling technique to achieve sonic design
goals. The upsampling results in a slightly larger latency (55 samples; 88
samples at 176.4 and 192 kHz) than most other UAD plug-ins. See Chapter
9 “Delay Compensation” in the UAD System Manual for more information.