User Manual
77
Owner’s Manual Overview 2
Features 2.2
77
Owner’s Manual
2.2 Features
The Central Station features high-quality analog circuitry and digital conversion.
Three sets of stereo analog inputs enable the Central Station to accept a wide variety
of sources. Its S/PDIF coax and Toslink (optical) digital inputs provide up to 24-bit, 192
kHz digital-to-analog conversion, and the converters deliver over 115 dB of dynamic
range. Each of the three sets of balance monitor outputs has a passive trim pot. The
monitoring section provides Mute, Dim, and Mono controls, in addition to separate
main line-level output and a set of cue outputs that can feed headphone ampliers.
The main audio path uses no amplier stages and has no op amps
or active integrated circuits (ICs), as these types of components
typically add noise, color, and distortion and produce a “pinched”
sound. Eliminating distortion also helps reduce ear fatigue.
Signal routing is achieved using 34 sealed, mechanical relays (instead of active
ICs). Extraneous electronics are hard-wire bypassed, helping maintain a minimal
signal path. Using relays ensures the most transparent signal path and maximizes
dynamic range, frequency range, and headroom, while minimizing noise and
coloration. The Central Station uses the highest-quality passive components,
including military-grade, 1% tolerance, metal-lm resistors; multi-element
potentiometers; and durable connectors to deliver the highest sonic performance.
2.2.1 Summary of Features
• Passive audio path; no op-amps or ICs
• Three sets of stereo analog inputs lets you switch between sources
• Two sets of stereo digital inputs (coax and optical)
• Three sets of stereo speaker outputs with Speaker Select
switches and recessed trim pots for each output
• Cue section with input-select switch and output-level control
• Main section with input-select switch, aux-input level control,
output-level control, mute, dim, and mono switches
• Talkback microphone system with onboard mic, external
microphone input, and footswitch input
• Dual 30-segment, fast acting, peak-hold LED metering
with Clear Peak switch and calibration
• High-denition, 24-bit, 192 kHz D/A converter with 115 dBu dynamic range
• Remote controllable via Central Station Remote (CSR-1)