Prism Sound Callia DAC Review – Beautiful voice

Detailed Technical Specifications – Inputs/Outputs

earphonia.com PrismSound Callia Review

For the technical minded that really want to see the low level specifics, below are some interesting tech specs.

ANALOGUE LINE OUTPUTS

ConfigurationFully-balanced analog signal path to electronically-balanced XLRs,
RCAs pseudo-balanced
Output amplitudeXLR: 0dBFS=14dBu; RCA: 0dBFS=2Vrms
Output impedance50Ω (both balanced and unbalanced outputs)
Unbalanced modeAutomatic, with bootstrapping level compensation
Total harmonic distortion-107dB (0.00045%, -0.1dBFS)
THD+N-106dB (0.00050%, -0.1dBFS)
Dynamic range115dB (-60dBFS)
Gain accuracy±0.05dB
LF roll-off-0.05dB at 8Hz, -3dB at <1Hz
HF roll-offfs = 44.1kHz: -0.05dB at 21.4kHz; -3dB at 22.0kHz
fs = 48kHz: -0.05dB at 23.2kHz; -3dB at 23.9kHz
fs = 96kHz: -0.05dB at 32.0kHz; -3dB at 47.8kHz
fs >= 192kHz, incl. DSD64/128: -0.05dB at 32.0kHz; -3dB at 76kHz
Output balance>50dB
Inter-channel cross-talk1kHz: <-135dB; 20Hz..20kHz: <-120dB
Inter-channel phase10Hz..5kHz: ±0.4°,
5kHz..20kHz: ±0.25°,
20kHz..50kHz: ±0.5°

HEADPHONE OUTPUT

Output amplitude0dBFS=18.0dBu (HiZ), 14.45dBu (MedZ), 8.45dBu (LoZ)
measured at top (maximum setting) of potentiometer
Output impedance4R
Total harmonic distortion-104dB (0.00045%, -0.1dBFS)
THD+n-103dB (0.00050%, -0.1dBFS)
Dynamic range113dB (-60dBFS)
Gain accuracy±0.05dB at top of potentiometer
LF roll-off-0.05dB at 6Hz; -3dB at 1.45Hz
HF roll-offfs=44.1kHz: -0.05dB at 20.3kHz; -3dB at 22.0kHz
fs=48kHz: -0.05dB at 21.1kHz; -3dB at 23.9kHz
fs=96kHz: -0.05dB at 27.0kHz, -3dB at 47.8kHz
fs=>=192kHz, including DSD64, DSD128:
-0.05dB at 27.0kHz, -3dB at 71.0kHz
Inter-channel cross-talk1kHz: <-120dB; 20Hz..20kHz: <-105dB
Inter-channel phase10Hz..5kHz: ±0.1º, 5kHz..20kHz: ±0.25º, 20kHz..50kHz: ±0.5º

USB INPUTS/SUPPORTED FORMATS

Interface protocolUSB Audio Device Class 2.0 (UAC2)
Audio formats supportedPCM audio of up to 32 bit word length at sampling rates of
44k1, 48k, 88k2, 96k, 176k4, 192k, 352k8, 384k and
DSD64, DSD128 in DoP frame

S/PDIF INPUTS

Interface formatsS/PDIF (RCA and TOSLINK); RCA also accepts AES3-ID
Audio formatsPCM audio of up to 24 bit word length at sampling rates of
44k1, 48k, 88k2, 96k, 176k4, 192k and
DSD64 in DoP frame

SYNCHRONIZATION/JITTER

Clock recovery technologyPrism Sound CleverClox hybrid PLL
Synchronization sources:Local or S/PDIF input (automatic selection)
Local clock accuracy±50ppm
Jitter rejection>60dB / decade above 100Hz

Performance graphs

High-level THD plot
Low-level Dynamic Range plot

 

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