Product Details
CALLIA RED

Reference Grade Audiophile DAC, Preamp & Headphone amplifier

Callia is a compact audiophile quality 2-channel USB2 DAC with a high-current, low-impedance headphone output and balanced and unbalanced monitor outputs. It uses the acclaimed Prism Sound signal path, clock circuitry, ARM Cortex processor & USB platform of the Prism Sound professional range. Callia supports USB and S/PDIF players and is capable of sample rates up to 384 kHz.

Product Details

CALLIA

REFERENCE DAC, PRE AND HEADPHONE AMPLIFIER

Designed and manufactured in the United Kingdom, CALLIA embodies the Prism Sound uncompromising approach to audio resulting in the most accurate and detailed DAC available. Callia reveals the most minute nuance of any performance and is flexible in the face of a variety of genres. Hear your music the way it was intended.

  • PRISTINE SOUND QUALITY
    Callia makes no compromises on audio quality, ensuring you’ll experience music at home exactly as it was experienced by those who created it in the studio. Our heritage and unrivaled experience has allowed for the creation of a DAC of unparalleled sonic clarity.
  • HEADPHONE OUTPUT
    CALLIA’s headphone output boasts a high-current, low impedance design optimized for the best possible performance. Able to power a wide range of high end headphones, CALLIA will adjust and match the impedance of your headphones for an unbeatable listening experience.
  • SIMPLIFIED CONNECTIVITY
    Callia is compatible with the widest range of computer hardware using a USB2 interface supporting UAC2 audio. Auto input detection and output protection allows for the hot plugging of cables without fear of damaging your speakers.
  • UNSURPASSED CLOCKING AND JITTER REJECTION
    Prism Sounds long history in developing test and measurement equipment for the audio industry has provided Callia with the pinnacle of ultra-stable clocks, ensuring the most accurate and detailed conversion available.

AUDIO FORMATS

CALLIA supports linear PCM in 2’s complement binary coding and, using the “DSD over PCM” (DOP) protocol, DSD at the original bit-rate (DSD64) and also at 2 x the original rate (DSD128). DSD Files encoded as “DOP” may be played with both ASIO and WDM drivers.

Your computer, tablet or transport will commonly decode formats such as mp3 to PCM prior to transmission to the sound card, so these formats will typically be supported on your device in the same manner as they would be with another sound card.

On the S/P-DIF inputs, DOP can also be used, but only at the original DSD bit rate (DSD64) as these connections do not have enough bandwidth for DSD128.

The ASIO native DSD format is not currently supported.

Technical Specification
Dimensions Table top (inc feet), W: 285mm D: 242mm H: 50mm
Power 90-250VAC, 50/60Hz, internal power supply, IEC 6A connector
Power consumption 15W
Fuse rating 0.5A(T), 20mm, glass
Weight 2.1kg
Operation ambient conditions 0 to 35°C, 85% maximum relative humidity
Configuration Electronically balanced, with fully-balanced analogue signal path, RCAs pseudo-balanced
Output amplitude XLR: 0dBFS=14dBu
RCA 0dBFS=2Vrms
Output impedance 50Ω (both balanced and unbalanced outputs)
Unbalanced mode Automatic, with bootstrapping level compensation
Total harmonic distortion -107dB (0.00045%, -1dBFS)
THD+N -106dB (0.00050%, -0.1dBFS)
Dynamic range 115dB (-60dBFS)
Gain accuracy ±0.05dB
LF roll-off -0.05dB at 8Hz, -3dB at <1Hz
HF roll-off fs = 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, including DSD64/128 -0.05dB at 32.0kHz; -3dB at 76kHz
Output balance >50dB
Inter-channel cross-talk 1kHz <-135dB
20Hz..20kHz <-120dB
Inter-channel phase 10Hz..5kHz: ±0.4°,
5kHz..20kHz ±0.25°
20kHz..50kHz ±0.5°
Output amplitude 0dBFS=18dBu (HiZ), 14.45dBu (MedZ), 8.45dBu (LoZ)
Output impedance
Total harmonic distortion -104dB (0.00045%, -0.1dBFS)
THD+N -103dB (0.00050%, -0.1dBFS)
Dynamic range 113dB (-60dBFS)
Gain accuracy ±0.05dB at top of potentiometer
LF roll-off -0.05dB at 8Hz, -3dB at <1Hz
HF roll-off fs = 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 DSD64/128 -0.05dB at 27.0kHz; -3dB at 71kHz
Inter-channel cross-talk 1kHz <-120dB
20Hz..20kHz <-105dB
Inter-channel phase 10Hz..5kHz: ±0.1°,
5kHz..20kHz ±0.25°
20kHz..50kHz ±0.5°
Interface protocol USB Audio Device Class 2.0 (UAC2)
Audio formats supported PCM audio of up to 32 bit word length at sampling rates of
Interface Format supported S/PDIF (RCA or TOSLINK), RCA also accepts AES3-ID
Audio formats supported PCM audio of up to 24 bit word length at sampling rates of
Input Channel Status Ignored