Manual

1.6
Operation Manual
© 2016 Prism Media Products Ltd
Revision 1.01Prism Sound Callia
2 Introduction to Callia
Callia is a USB and S/PDIF D/A converter and pre-amplifier for domestic use. Prism Sound A/D and
D/A conversion has been the technology of choice in the world's top recording and mastering studios
for over 20 years; Callia brings the conversion quality of these renowned facilities into your home for
the first time.
For a summary of Callia's capabilities, continue to the Features section.
For directions for getting started quickly, see the Getting started section below.
For detailed software installation procedures, see the Installation procedures.
For full details of Callia's controls and connections, look at the Hardware section.
2.1 Features
Callia provides two channels of studio-quality D/A conversion with the following premium features:
Analogue and conversion
· Balanced (XLR, +14dBu) and unbalanced (RCA, 2.00Vrms) output amplifiers
· Wide dynamic range (>115dB rms unweighted at -60dBFS)
· Low distortion (<-107dB rms unweighted at FS)
· Low maximum aharmonic spuriae (<-158dB rms unweighted at FS)
· Fully-balanced signal path minimises distortion artifacts and interference
· Low impedance, low distortion headphone amplifier, optimised for headphone impedance
· Prism Sound CleverClox hybrid PLL for ultimately low sampling jitter
· Analogue circuits galvanically isolated from PSU and digital circuits to eliminate interference
· High-precision digital interpolation filter
· Multi-bit delta-Sigma modulator
· Precise absolute / inter-channel gain matching, +/-0.05dB, includes line volume control tracking
Digital inputs
· USB input: class compliant asynchronous USB Audio Device Class 2.0 (UAC2) device; compatible
with Windows and Mac computers as well as Linux-based PC, player, streamer and server devices
· S/PDIF inputs: optical (TOSLINK) and RCA formats
· Supported audio data formats:
Input
PCM sample rates
PCM max
wordlength
DSD bit rate
USB (UAC2)
44.1,48,88.2,96,176.4,192,352.8,384 kHz
32 bits
DSD64, DSD128
Optical S/PDIF
44.1,48,88.2,96,176.4,192 kHz
24 bits
DSD64
RCA S/PDIF
44.1,48,88.2,96,176.4,192 kHz
24 bits
DSD64