Technical information
Apollo Software Manual Chapter 8: Unison 155
Unison Operation Notes
The operating notes in this section only apply to Unison functionality (when Unison plug-
ins are loaded in Console’s Unison insert).
The notes do NOT apply to Unison plug-ins that are used in Console’s standard inserts,
nor via VST/AU/RTAS/AAX64 within a DAW, even when a Unison plug-in title is used. In
this scenario, Unison plug-ins function the same as all standard (non-Unison) UAD plug-
in titles and there is no physical or electrical hardware interaction.
Important: Unison functionality is available only when Unison-enabled UAD plug-
ins are loaded within Console in the unique Unison inserts.
• Unison insert processing is always recorded in the DAW (regardless of the current
Insert Effects setting) because Unison plug-ins process the physical inputs.
• A microphone, line input, or Hi-Z instrument source must be attached to the Apol-
lo input channel for Unison plug-in processing in the Unison insert to be audible.
• Apollo’s hardware preamp controls remain active even if the Unison plug-in is
disabled.
• Because Apollo’s front panel preamp controls are always current and inherited by
the Unison plug-in, changes made to a Unison plug-in when the plug-in is by-
passed are not retained when the plug-in is reactivated.
• A Unison plug-in’s modeled behaviors and parameter ranges are used by the hard-
ware controls whenever possible, even if the attribute is different than Apollo’s
stock preamps. For example, if the Unison plug-in has a 15 dB pad, then Apollo’s
front panel PAD button value will use the Unison plug-in’s 15 dB value instead of
Apollo’s stock 20 dB value.
• Default gain levels when a Unison plug-in is inserted can vary from Apollo’s de-
fault (non-Unison) preamp levels, and also between various Unison plug-in titles.
This is a by-product of accurate preamp modeling. Because hardware preamp
designs from each manufacturer vary, they all have different total gain amounts,
control ranges, and control response curves, whether Mic, Line, or Hi-Z.
• If a Unison plug-in does not contain settings that are available on Apollo (pad, low
cut filter, etc), the Apollo settings are not changed when the Unison plug-in set-
tings are loaded, and the Apollo settings are still available for control via Apollo’s
front panel and/or Console channel.
• When a Unison plug-in is removed from the Unison insert, Apollo’s mic input im-
pedance reverts to its default value of 5.4K Ohms.
• When the original hardware preamp being emulated by the Unison plug-in has a
Hi-Z (instrument) input and associated Hi-Z input switch, this switch is unavail-
able in the Unison plug-in interface. Instead, the Unison plug-in’s Hi-Z input is
automatically selected when a mono (tip-sleeve) plug is inserted into the Unison
channel’s front panel Hi-Z input jack.
(Continued)