Prism Sound Callia Reference Stereo USB DAC

SKU: PSCALLIA MFR: CALLIA
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Key Features

  • Experience pristine audio fidelity with the Prism Sound Callia USB DAC for reference-quality sound.
  • Enjoy versatile connectivity with balanced XLR and unbalanced RCA outputs on this stereo USB DAC.
  • Achieve optimal headphone performance using selectable impedance settings for clear, powerful sound.
  • Utilize the Callia's S/PDIF inputs for seamless integration with a variety of digital audio sources.
  • Benefit from low distortion and high dynamic range, ensuring detailed and accurate audio playback.
  • Trust in Prism Sound's CleverClox tech for superior jitter rejection, delivering stable audio sync.
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Special Order?Estimated to Ship: 08/18/2025
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Prism Sound Callia Specifications

Front Panel

Front Panel

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  • Input selection LEDs

    Indicate auto/manual select mode and current input: optical S/PDIF, RCA S/PDIF or USB.

  • Sample rate/format LEDs

    Indicate sample rate: 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz
    (for fs>192k see note at foot of page)
    DSD64 or DSD128 also indicates PCM word-length '> 16 bits' (24b LED ON blue) or '> 24 bits' (24b LED ON pink).

  • Line volume control

    Controls the volume at the analog line outputs when enabled.
    (See 'REAR PANEL -> DIP switches')
    Halo setting indication.

  • Headphone output

    6.3mm stereo jack socket, with illuminated volume control

  • Standby/source button

    Switches between operation and standby modes; also used for manual input selection (momentary press) and LED brigtness.

  • LED brightness

    Hold Standby/source button down and twist Volume knob to adjust.

Rear Panel

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  • Analog line outputs

    Two XLR male for balanced connection; two RCA sockets for unbalanced connection

  • S/PDIF inputs

    RCA coaxial and TOSLINK optical formats

  • DIP switches

    Enable/disable line volume control, DSD headroom select, headphone impedance setting

  • USB port

    USB 2.0 B type device socket

  • Mains power

    3-pin 6A IEC inlet

Software Support

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  • Mac OS Support

    OS X 10.5 or later, Intel platform

  • Windows OS Support

    Windows Vista, 7, 8.x, 10 or later, 32 or 64 bit

  • Mac OS X audio driver

    Callia is a Core Audio compliant device

  • Windows audio driver

    ASIO and WDM device drivers supplied

Analogue Line Inputs

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  • Configuration

    Fully-balanced analog signal path to electronically-balanced XLRs, RCAs pseudo-balanced

  • Output amplitude

    XLR: 0dBFS=14dBu; RCA: 0dBFS=2Vrms

  • Output impedance

    50 Ohm (both balanced and unbalanced outputs)

  • Unbalanced mode

    Automatic, with bootstrapping level compensation

  • Total harmonic distortion

    -107dB (0.00045%, -0.1dBFS)

  • 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, incl. 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 Degree
    5kHz..20kHz: +/-0.25 Degree
    20kHz..50kHz: +/-0.5 Degree

Headphone Output

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  • Output amplitude

    0dBFS=18.0dBu (HiZ), 14.45dBu (MedZ), 8.45dBu (LoZ)
    Measured at top (maximum setting) of potentiometer

  • Output impedance

    4R

  • 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 6Hz; -3dB at 1.45Hz

  • 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, DSD128: -0.05dB at 27.0kHz, -3dB at 71.0kHz

  • Inter-channel cross-talk

    1kHz: <-120dB; 20Hz..20kHz: <-105dB

  • Inter-channel phase

    10Hz..5kHz: +/-0.1 Degree , 5kHz..20kHz: +/-0.25 Degree , 20kHz..50kHz: +/-0.5 Degree

USB Inputs

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  • 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 44k1, 48k, 88k2, 96k, 176k4, 192k, 352k8, 384k and DSD64, DSD128 in DoP frame (for fs>192k see note at foot of page).

S/PDIF Inputs

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  • Interface formats

    S/PDIF (RCA and TOSLINK); RCA also accepts AES3-ID

  • Audio formats

    PCM audio of up to 24 bit word length at sampling rates of 44k1, 48k, 88k2, 96k, 176k4, 192k and DSD64 in DoP frame

  • Channel Status

    Ignored

Synchronization

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  • Clock recovery technology

    Prism Sound CleverClox hybrid PLL

  • Synchronization sources:

    Local or S/PDIF input (automatic selection)

  • Local clock accuracy

    +/-50ppm

  • Jitter rejection

    >60dB / decade above 100Hz

Physical

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  • Dimensions (H x W x D)

    11.2 x 9.5 x 2.0" (285 x 242 x 50mm) (Including feet)

  • Weight

    4.6 lbs (2.1kg)

  • UPC Code

    669014270979

About Prism Sound Callia

Why settle for less when you can experience the pinnacle of audio clarity with the Callia Reference Stereo USB DAC Designed and meticulously crafted in the United Kingdom, this high-quality, advanced digital-to-analog converter (DAC) is a testament to Prism Sound's unwavering commitment to superior audio quality.

The Callia DAC is not just a device, but a gateway to an immersive audio experience. It unveils the most subtle nuances of any performance, effortlessly adapting to a diverse range of music genres. This professional-grade DAC allows you to hear your music exactly as the creators intended, right in the comfort of your own home.

The Callia DAC's pristine sound quality is uncompromised, thanks to our rich heritage and unparalleled experience in the audio industry. This powerful device delivers unparalleled sonic clarity, transforming your listening experience into an auditory feast.

Equipped with a high-current, low impedance headphone output, the Callia DAC is optimized for peak performance. It's capable of powering a broad spectrum of high-end headphones, adjusting and matching the impedance to provide an unbeatable listening experience.

The Callia DAC's sophisticated design also includes simplified connectivity. Compatible with a wide range of computer hardware via a USB2 interface supporting UAC2 audio, it features auto input detection and output protection. This allows for the hot plugging of cables without the risk of damaging your speakers.

Prism Sound's extensive history in developing test and measurement equipment for the audio industry has endowed the Callia DAC with unsurpassed clocking and jitter rejection. This ensures the most accurate and detailed conversion available, making it a top choice for audio enthusiasts.

The Callia DAC 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). It's capable of playing DSD files encoded as "DOP" with both ASIO and WDM drivers.

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.

Compact yet powerful, the Callia Reference Stereo USB DAC is the perfect companion for those seeking a high-quality audio experience, whether at home or on the go. Experience the difference with Callia today.

Prism Sound Callia Features

  • PCM Resolutions up to 32-Bit / 384 kHz
  • DSD Resolutions up to 12.288 MHz
  • TOSLINK Optical & Coaxial S/PIDIF Inputs

Product Documents

User Manual

Key Features

  • Experience pristine audio fidelity with the Prism Sound Callia USB DAC for reference-quality sound.
  • Enjoy versatile connectivity with balanced XLR and unbalanced RCA outputs on this stereo USB DAC.
  • Achieve optimal headphone performance using selectable impedance settings for clear, powerful sound.
  • Utilize the Callia's S/PDIF inputs for seamless integration with a variety of digital audio sources.
  • Benefit from low distortion and high dynamic range, ensuring detailed and accurate audio playback.
  • Trust in Prism Sound's CleverClox tech for superior jitter rejection, delivering stable audio sync.

What's in the box:

  • Prism Sound Callia Reference Stereo USB DAC
  • IEC Mains Lead
  • USB Lead Type A to B
  • CD with Software and Manuals
  • Prism Sound 3 Year Limited warranty