Apollo Thunderbolt Software Manual Latency & Apollo 181
Upsampled UAD plug-ins
Some UAD plug-ins are upsampled, meaning their internal sample rate is increased
to achieve sonic design goals. When upsampled UAD plug-ins are used in Console,
additional latency is induced in the channel(s) using the plug-in(s).
Although the latency added by upsampled UAD plug-ins is negligible (typically between
0-300 samples, depending on the plug-in and sample rate), this extra latency can affect
phase coherency in a session.
Note: Upsampling latency is automatically compensated by modern host DAWs.
Upsampled Latency Values
For a chart of specific upsampling latency values for UAD plug-ins, see the UAD Plug-Ins
Manual.
When To Use Console Input Delay Compensation
Console IDC is required to maintain phase alignment only when BOTH of the following
conditions are active:
1. Multiple Console inputs are used for a single source (such as a drum kit using
multiple microphones), and
2. Any of those input channels contain upsampled UAD plug-ins.
Tip: When IDC is not needed, disable Console IDC for the lowest possible input
latency.