Universal Audio Apollo Software - Manual (Page 139)

Apollo Software Manual Glossary 139
Transimpedance Preamplifier A transformerless solid-state preamplifier utilizing a tran-
sistor configuration that employs current feedback for ultra-low distortion and the highest
possible quality of signal from input to output. The transimpedance design allows audio
from 4 Hz to 150 kHz to pass through without altering the phase relationships between
fundamental frequencies and overtones. Noise and distortion are kept to near-theoretical
minimums so critical signals may be generously amplified without degrading the quality
or character of the sound source.
TRS Acronym for Tip-Ring-Sleeve. A ¼” phone connector with three conductors, typically
used for balanced signal connections (e.g., I/O) or carrying two unbalanced signals (e.g.,
headphones).
TS Acronym for Tip-Sleeve. A ¼” phone connector with two conductors, typically used
for unbalanced signal connections. Note that TS, like TRS and XLR, denotes the con-
nector only and does not necessarily indicate the signal level of the connection. TS/TRS/
XLR cables are used for both low-level (e.g., microphones and instruments) and line-level
connections.
UAD Acronym for “Universal Audio Digital.” Used in reference to digital products created
by Universal Audio.
UAD-2 A line of DSP accelerator products developed and manufactured by Universal
Audio.
Unison Universal Audio’s exclusive preamp hardware/software integration technology that
enables UAD preamp plug-ins reconfigure the physical input impedance, gain staging
response, and other parameters of Apollo’s mic preamp hardware to match the emulated
preamp’s hardware design characteristics with bi-direction control.
Virtual I/O Apollo audio inputs and outputs that exist in software but not in hardware. Vir-
tual I/O is used to route digital audio channels between Console and other audio applica-
tions. Compare to Flex Routing.
Wet Refers to a signal that is processed, e.g., recording a wet signal. The antonym of a
“dry” signal.
Word Clock A dedicated clock signal based on the transmitting device’s sample rate or
the speed with which sample words are sent over a digital connection. (See “Clock”)
XLR A standard three-pin connector used by many audio devices, with pin 1 typically
connected to the shield of the cabling, thus providing ground. Pins 2 and 3 are used to
carry audio signal, normally in a balanced (out of phase) configuration.