User manual
Prism Sound CALLIA High-Resolution Stereo USB

User Manual for Prism Sound CALLIA High-Resolution Stereo USB DAC

• Product category: DACs Prism Sound
• Brand: Prism Sound
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Prism Sound DACs

Product description

Reliable Quality
• Prism Sound uses precise software calibration techniques in its converters to avoid the unreliability of pots and tweaks. Minimizing noise, interference, and hum was a priority in the design. All the analog circuits have galvanic isolation, while the unit's electronically balanced I/O allows it to handle common mode interference sources and trouble-free connection to unbalanced equipment.

Low-Impedance Headphone Output
• The CALLIA headphone output utilizes a design different from that of the Prism Sound professional audio range. The CALLIA headphone output is a high-current, low-impedance design to handle 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, balanced, and transparent sound.

Easy Connectivity
• By incorporating a UAC2-compliant USB 2.0 interface, the CALLIA is supported natively in Mac OS X, Linux, and Android, and in Windows with the supplied WDM and ASIO drivers. It also supports S/PDIF digital audio inputs via TOSLINK optical or coaxial copper jacks. Source selection is automatic, though manual override is possible.

Balanced and Unbalanced Outputs
• The CALLIA offers balanced and unbalanced output formats at 14 dBu and 2 Vrms respectively. The balanced output is presented on XLR 3-pin male connectors, while the unbalanced output is on RCA coaxial connectors.

Multiple Audio Formats
• Support is provided for linear PCM and DSD formats. Using DSD over PCM (DOP) protocol, the CALLIA accommodates DSD at the original rate (DSD64) and at two times the original rate (DSD128). DSD files encoded as DOP may be played with both ASIO and WDM drivers.

Stable Clocking
• The CALLIA uses the same CleverClox hybrid digital phase-locked loop (DPLL) circuitry as the Prism Sound professional line. The CleverClox regenerates clock signal for optimum stability.

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Technical parameters

Prism Sound CALLIA Specs

System Requirements	Mac OS X 10.5 or later (Intel only) Host application that supports Core Audio Windows Vista or later (32- / 64-bit) Host application that supports ASIO or WDM Linux Android or iOS (separate adapters may be required)
Inputs	1 x TOSLINK optical (S/PDIF) 1 x coaxial (S/PDIF)
Outputs	2 x XLR 3-pin (balanced) 2 x RCA (pseudo-balanced) 1 x 1/4" TRS stereo headphone jack
USB	1 x USB 2.0 Type B
Bit Depth	PCM via S/PDIF Input: Up to 24-bit PCM via USB Input: Up to 32-bit DSD: 1-bit
Sample Rates	PCM: Up to 384 kHz DSD64: 5.6448 MHz, 6.144 MHz DSD128: 11.2896 MHz, 12.288 MHz
Supported Digital Audio Standards	S/PDIF (TOSLINK or coaxial) AES3 (coaxial)
Output Level	XLR: 0 dBFS = 14 dBu RCA: 0 dBFS = 2 Vrms 1/4" Hi-Z: 0 dBFS = 18 dBu 1/4" Med-Z: 0 dBFS = 14.45 dBu 1/4" Lo-Z: 0 dBFS = 8.45 dBu
Output Impedance	XLR/RCA: 50 Ohms 1/4": 4 Ohms
Unbalanced Outputs	Automatic, with bootstrapping level compensation
Balance	Output: >50 dB
Total Harmonic Distortion (THD)	XLR/RCA: -107 dB at -0.1 dBFS (0.00045%) 1/4": -104 dB at -0.1 dBFS (0.00045%)
THD+N	XLR/RCA: -106 dB at -0.1 dBFS (0.0005%) 1/4": -103 dB at -0.1 dBFS (0.0005%)
Dynamic Range	XLR/RCA: 115 dB (-60 dBFS) 1/4": 113 dB (-60 dBFS)
Gain Accuracy	±0.05 dB
Attenuation	LF Roll-Off (XLR/RCA): -0.05 dB at 8 Hz, -3 dB at <1 Hz LF Roll-Off (1/4"): -0.05 dB at 6 Hz, -3 dB at 1.45 Hz HF Roll-Off (XLR/RCA) at 44.1 kHz: -0.05 dB at 21.4 kHz, -3 dB at 22 kHz HF Roll-Off (XLR/RCA) at 48 kHz: -0.05 dB at 23.2 kHz, -3 dB at 23.9 kHz HF Roll-Off (XLR/RCA) at 96 kHz: -0.05 dB at 32 kHz, -3 dB at 47.8 kHz HF Roll-Off (XLR/RCA) at Samples Rates 192 kHz and Higher: -0.05 dB at 32 kHz, -3 dB at 76 kHz HF Roll-Off (1/4") at 44.1 kHz: -0.05 dB at 20.3 kHz, -3 dB at 22 kHz HF Roll-Off (1/4") at 48 kHz: -0.05 dB at 21.1 kHz, -3 dB at 23.9 kHz HF Roll-Off (1/4") at 96 kHz: -0.05 dB at 27 kHz, -3 dB at 47.8 kHz HF Roll-Off (1/4") at Samples Rates 192 kHz and Higher: -0.05 dB at 27 kHz, -3 dB at 71 kHz
Crosstalk	XLR/RCA (1 kHz): < -135 dB XLR/RCA (20 Hz to 20 kHz): < -120 dB 1/4" (1 kHz): < -120 dB 1/4" (20 Hz to 20 kHz): < -105 dB
Inter-Channel Differential Phase	XLR/RCA (10 Hz to 5 kHz): ±0.4° XLR/RCA (5 kHz to 20 kHz): ±0.25° XLR/RCA (20 kHz to 50 kHz): ±0.5° 1/4" (10 Hz to 5 kHz): ±0.1° 1/4" (5 kHz to 20 kHz): ±0.25° 1/4" (20 kHz to 50 kHz): ±0.5°
Channel Support	S/PDIF Input: Channel status ignored
Clocking System	Prism Sound CleverClox hybrid PLL
Clock Sources	Local or S/PDIF input (automatic selection)
Clock Accuracy	Rating 100% users recommend this product to others. And what about you? This product has already been rated by 05 owners. Add your rating and experience with the product. Discussion Ask our technicians if you have a problem with your settings, or if anything is unclear in the user manual you have downloaded. You can make use of our moderated discussion. The discussion is public and helps other users of our website who may be encountering similar problems. The discussion is empty - enter the first post Post a new topic / query / comment: Items marked with * are required. Your name *: E-mail : Subject *: Message *: Your email address will not be displayed. Do not forget to fill it in if you want to receive a reply to your enquiry/contribution. Processing of personal data in accordance with GDPR