Prism Sound Callia USB Audiophile DAC and Preamplifier :
ON DEMO AT THE SHOP !!!! Designed and manufactured exclusively in the United Kingdom, the Prism Sound CALLIA USB Digital to Analogue Converter (DAC) and digital audio preamplifier is tailored for listening to music.
CALLIA is simply the best way to experience digital music. Coupled with high quality analogue power amplification and loudspeakers, CALLIA will deliver your music exactly as the recording producer intended. Whether it is early music, symphonic, choral, easy listening, elevator music, jazz, pop, hip-hop, EDM, garage, hard rock or something else, the clarity and neutrality of CALLIA will amaze you with its flexibility in the face of such different genres.
Using the acclaimed Prism Sound signal path, clock circuitry, ARM Cortex processor & USB platform of the Prism Sound professional range, CALLIA supports USB and S/P-DIF players.
- Plug, play and enjoy your music in all popular formats
- No-compromise, full Prism Sound audio quality
- Play in Windows**, OSX, Linux, iOS and Android ***
- Class compliant UAC2/USB for best compatibility
- ASIO drivers for Windows
- Windows WDM drivers (Vista and later)
- Play from disc transport/player device via S/P-DIF
- Optical and co-axial S/P-DIF inputs
- Playback sampling rates from 44.1kHz to 384kHz ****
- DSD64/128 via DOP (S/P-DIF DSD64 only)*****
- Automated source selection, with manual override
- Balanced +14dBu XLR and 2V RCA phono outputs
- Low-Z headphone output (adjustable sensitivity)
- Front-panel digital master volume control
- State-of-the-art clocking with hybrid 2-stage DPLL
- Fully-floating balanced architecture for low noise
No Compromise full Prism Sound Audio Quality
The design goal for CALLIA was to provide Prism Sound audio quality in a sophisticated but easy to use package for listening to music at home. CALLIA makes no compromises on audio quality. CALLIA delivers the standard of audio performance demanded by top recording professionals at sampling rates from 44.1kHz to 384kHz**** or in DSD64 or DSD128.
CALLIA has the same no-compromise analogue circuitry as its professional cousins, with the same fully-balanced-throughout architecture and the same isolation barriers protecting the analogue from digital and computer interference.
New High Current, Low Impedance Headphone Output
The CALLIA headphone output is a brand new design, different from that of the professional audio range. The CALLIA headphone output is a high-current, low impedance design optimized for the best possible performance. CALLIA handles the wide range of headphone sensitivities and impedances by providing several operating ranges, selected by switch presets on the rear panel of the unit. In this way, CALLIA can easily handle headphones from a few ohms to more than 250 ohms and will deliver a smooth, well-balanced and transparent sound.
Easy connectivity to your computer, tablet* or transport
In CALLIA, we have created a unit compatible with the widest range of computer hardware using a USB2 interface supporting UAC2 audio. CALLIA also supports S/P-DIF digital audio inputs.
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.
Balanced and unbalanced outputs
CALLIA offers balanced and unbalanced output formats at +14dBu and 2Vrms respectively. The balanced output is presented on professional XLR male pin connectors and the unbalanced (consumer) output is on industry-standard "Phono" co-axial connectors.
Unsurpassed Jitter Rejection
CALLIA uses the same "CleverClox" hybrid digital phase-locked loop (DPLL) circuitry as Prism Sound professional products. Prism Sound digital audio products re-generate ultra-stable clocks for best quality conversion.
Over the years, Prism Sound's reputation for audio quality has been matched by its reputation for after-sales support and technical advice. CALLIA has the benefit of that support and customers have access to one of the best technical teams in the business.
|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.|
|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|
|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 OUTPUTS|
|Configuration||Fully-balanced analog signal path to electronically-balanced XLRs,
|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%, -0.1dBFS)|
|THD+N||-106dB (0.00050%, -0.1dBFS)|
|Dynamic range||115dB (-60dBFS)|
|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
|Inter-channel cross-talk||1kHz: <-135dB; 20Hz..20kHz: <-120dB|
|Inter-channel phase||10Hz..5kHz: ±0.4°,
|Output amplitude||0dBFS=18.0dBu (HiZ), 14.45dBu (MedZ), 8.45dBu (LoZ)
measured at top (maximum setting) of potentiometer
|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: ±0.1º, 5kHz..20kHz: ±0.25º, 20kHz..50kHz: ±0.5º|
|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).
|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
|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|
|Dimensions||Table-top (including feet): 285 x 242 x 50mm|
|Mains voltage||90VAC - 250VAC, 50 - 60Hz|
|Fuse rating||0.5A(T), 20mm, glass|
|Operation ambient conditions||0 to 35°C, 85% maximum relative humidity|
|Prism Sound USB Memory Stick||With firmware loader software & Windows drivers|
|IEC mains lead||x 1|
|USB lead||(type A to B) x 1|